diff --git a/docs/_includes/default.njk b/docs/_includes/default.njk
index 2222c8b..dd7cc1d 100644
--- a/docs/_includes/default.njk
+++ b/docs/_includes/default.njk
@@ -27,7 +27,7 @@
     <header>
       {# Menu trigger #}
       <a class="menu-trigger text-muted" href="#nav">
-        <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
+        <svg viewBox="0 0 24 24" class="icon">
           <path d="M4 6l16 0" />
           <path d="M4 12l16 0" />
           <path d="M4 18l16 0" />
@@ -37,16 +37,16 @@
       <div class="controls">
         <div>
           <a class="button hollow neutral pill" href="#search" onclick="focusSearch()">
-            <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon"><path d="M10 10m-7 0a7 7 0 1 0 14 0a7 7 0 1 0 -14 0" /><path d="M21 21l-6 -6" /></svg>
+            <svg viewBox="0 0 24 24" class="icon"><path d="M10 10m-7 0a7 7 0 1 0 14 0a7 7 0 1 0 -14 0" /><path d="M21 21l-6 -6" /></svg>
             Search
           </a>
         </div>
         <div class="theme-mode">
           <button id="light-mode" onclick="setLight()" class="ghost neutral pill">
-            <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon"><path d="M12 12m-4 0a4 4 0 1 0 8 0a4 4 0 1 0 -8 0" /><path d="M3 12h1m8 -9v1m8 8h1m-9 8v1m-6.4 -15.4l.7 .7m12.1 -.7l-.7 .7m0 11.4l.7 .7m-12.1 -.7l-.7 .7" /></svg>
+            <svg viewBox="0 0 24 24" class="icon"><path d="M12 12m-4 0a4 4 0 1 0 8 0a4 4 0 1 0 -8 0" /><path d="M3 12h1m8 -9v1m8 8h1m-9 8v1m-6.4 -15.4l.7 .7m12.1 -.7l-.7 .7m0 11.4l.7 .7m-12.1 -.7l-.7 .7" /></svg>
           </button>
           <button id="dark-mode" onclick="setDark()" class="ghost neutral pill">
-            <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon"><path d="M12 3c.132 0 .263 0 .393 0a7.5 7.5 0 0 0 7.92 12.446a9 9 0 1 1 -8.313 -12.454z" /></svg>
+            <svg viewBox="0 0 24 24" class="icon"><path d="M12 3c.132 0 .263 0 .393 0a7.5 7.5 0 0 0 7.92 12.446a9 9 0 1 1 -8.313 -12.454z" /></svg>
           </button>
         </div>
       </div>
@@ -58,7 +58,7 @@
       <hr />
       <div id="result">
         <div class="state empty">
-          <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon"><path d="M12 3a3 3 0 0 0 -3 3v12a3 3 0 0 0 3 3" /><path d="M6 3a3 3 0 0 1 3 3v12a3 3 0 0 1 -3 3" /><path d="M13 7h7a1 1 0 0 1 1 1v8a1 1 0 0 1 -1 1h-7" /><path d="M5 7h-1a1 1 0 0 0 -1 1v8a1 1 0 0 0 1 1h1" /><path d="M17 12h.01" /><path d="M13 12h.01" /></svg>
+          <svg viewBox="0 0 24 24" class="icon"><path d="M12 3a3 3 0 0 0 -3 3v12a3 3 0 0 0 3 3" /><path d="M6 3a3 3 0 0 1 3 3v12a3 3 0 0 1 -3 3" /><path d="M13 7h7a1 1 0 0 1 1 1v8a1 1 0 0 1 -1 1h-7" /><path d="M5 7h-1a1 1 0 0 0 -1 1v8a1 1 0 0 0 1 1h1" /><path d="M17 12h.01" /><path d="M13 12h.01" /></svg>
           <h4>Waiting for search input</h4>
           <p class="text-muted">Please type something into the search field.</p>
         </div>
@@ -80,11 +80,11 @@
         </div>
         <div class="actions">
           <a href="{{ repoUrl }}" target="_blank" class="button hollow neutral sm">
-            <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon"><path d="M9 19c-4.3 1.4 -4.3 -2.5 -6 -3m12 5v-3.5c0 -1 .1 -1.4 -.5 -2c2.8 -.3 5.5 -1.4 5.5 -6a4.6 4.6 0 0 0 -1.3 -3.2a4.2 4.2 0 0 0 -.1 -3.2s-1.1 -.3 -3.5 1.3a12.3 12.3 0 0 0 -6.2 0c-2.4 -1.6 -3.5 -1.3 -3.5 -1.3a4.2 4.2 0 0 0 -.1 3.2a4.6 4.6 0 0 0 -1.3 3.2c0 4.6 2.7 5.7 5.5 6c-.6 .6 -.6 1.2 -.5 2v3.5" /></svg>
+            <svg viewBox="0 0 24 24" class="icon"><path d="M9 19c-4.3 1.4 -4.3 -2.5 -6 -3m12 5v-3.5c0 -1 .1 -1.4 -.5 -2c2.8 -.3 5.5 -1.4 5.5 -6a4.6 4.6 0 0 0 -1.3 -3.2a4.2 4.2 0 0 0 -.1 -3.2s-1.1 -.3 -3.5 1.3a12.3 12.3 0 0 0 -6.2 0c-2.4 -1.6 -3.5 -1.3 -3.5 -1.3a4.2 4.2 0 0 0 -.1 3.2a4.6 4.6 0 0 0 -1.3 3.2c0 4.6 2.7 5.7 5.5 6c-.6 .6 -.6 1.2 -.5 2v3.5" /></svg>
             GitHub
           </a>
           <a href="{{ donationUrl }}" target="_blank" class="button hollow sm">
-            <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon"><path d="M19.5 12.572l-7.5 7.428l-7.5 -7.428a5 5 0 1 1 7.5 -6.566a5 5 0 1 1 7.5 6.572" /></svg>
+            <svg viewBox="0 0 24 24" class="icon"><path d="M19.5 12.572l-7.5 7.428l-7.5 -7.428a5 5 0 1 1 7.5 -6.566a5 5 0 1 1 7.5 6.572" /></svg>
             Support
           </a>
         </div>
diff --git a/docs/_includes/menu.njk b/docs/_includes/menu.njk
index dc86cce..929ec4d 100644
--- a/docs/_includes/menu.njk
+++ b/docs/_includes/menu.njk
@@ -1,7 +1,7 @@
 <ul>
   <li>
     <h2 class="text-lg flex items-center gap-2">
-      <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
+      <svg viewBox="0 0 24 24" class="icon">
         <path stroke="none" d="M0 0h24v24H0z" fill="none" />
         <path d="M4 13a8 8 0 0 1 7 7a6 6 0 0 0 3 -5a9 9 0 0 0 6 -8a3 3 0 0 0 -3 -3a9 9 0 0 0 -8 6a6 6 0 0 0 -5 3" />
         <path d="M7 14a6 6 0 0 0 -3 6a6 6 0 0 0 6 -3" />
@@ -18,7 +18,7 @@
   </li>
   <li>
     <h2 class="text-lg flex items-center gap-2">
-      <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
+      <svg viewBox="0 0 24 24" class="icon">
         <path stroke="none" d="M0 0h24v24H0z" fill="none" />
         <path d="M6 17.6l-2 -1.1v-2.5" />
         <path d="M4 10v-2.5l2 -1.1" />
@@ -43,7 +43,7 @@
   </li>
   <li>
     <h2 class="text-lg flex items-center gap-2">
-      <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
+      <svg viewBox="0 0 24 24" class="icon">
         <path stroke="none" d="M0 0h24v24H0z" fill="none" />
         <path d="M7 10h3v-3l-3.5 -3.5a6 6 0 0 1 8 8l6 6a2 2 0 0 1 -3 3l-6 -6a6 6 0 0 1 -8 -8l3.5 3.5" />
       </svg>
@@ -61,7 +61,7 @@
   </li>
   <li>
     <h2 class="text-lg flex items-center gap-2">
-      <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
+      <svg viewBox="0 0 24 24" class="icon">
         <path stroke="none" d="M0 0h24v24H0z" fill="none" />
         <path d="M3.604 7.197l7.138 -3.109a.96 .96 0 0 1 1.27 .527l4.924 11.902a1 1 0 0 1 -.514 1.304l-7.137 3.109a.96 .96 0 0 1 -1.271 -.527l-4.924 -11.903a1 1 0 0 1 .514 -1.304z" />
         <path d="M15 4h1a1 1 0 0 1 1 1v3.5" />
diff --git a/docs/assets/scripts/docs.js b/docs/assets/scripts/docs.js
index 57ce7d2..6ebffa3 100644
--- a/docs/assets/scripts/docs.js
+++ b/docs/assets/scripts/docs.js
@@ -29,7 +29,7 @@ searchInput.addEventListener('input', (event) => {
   // Handle empty input
   if (!query.length) {
     searchResult.innerHTML = `<div class="state empty">
-      <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon"><path d="M12 3a3 3 0 0 0 -3 3v12a3 3 0 0 0 3 3" /><path d="M6 3a3 3 0 0 1 3 3v12a3 3 0 0 1 -3 3" /><path d="M13 7h7a1 1 0 0 1 1 1v8a1 1 0 0 1 -1 1h-7" /><path d="M5 7h-1a1 1 0 0 0 -1 1v8a1 1 0 0 0 1 1h1" /><path d="M17 12h.01" /><path d="M13 12h.01" /></svg>
+      <svg viewBox="0 0 24 24" class="icon"><path d="M12 3a3 3 0 0 0 -3 3v12a3 3 0 0 0 3 3" /><path d="M6 3a3 3 0 0 1 3 3v12a3 3 0 0 1 -3 3" /><path d="M13 7h7a1 1 0 0 1 1 1v8a1 1 0 0 1 -1 1h-7" /><path d="M5 7h-1a1 1 0 0 0 -1 1v8a1 1 0 0 0 1 1h1" /><path d="M17 12h.01" /><path d="M13 12h.01" /></svg>
       <h4>Waiting for search input</h4>
       <p class="text-muted">Please type something into the search field.</p>
     </div>`;
@@ -50,7 +50,7 @@ searchInput.addEventListener('input', (event) => {
       }[c.cat];
       return `${p}<a href="${c.url}" class="entry">
         <div class="text-muted">
-          <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">${icon}</svg>
+          <svg viewBox="0 0 24 24" class="icon">${icon}</svg>
         </div>
         <div>
           <h5>${c.name}</h5>
@@ -60,7 +60,7 @@ searchInput.addEventListener('input', (event) => {
     }, '')
   } else {
     searchResult.innerHTML = `<div class="state empty">
-      <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon"><path d="M3 7v4a1 1 0 0 0 1 1h3" /><path d="M7 7v10" /><path d="M10 8v8a1 1 0 0 0 1 1h2a1 1 0 0 0 1 -1v-8a1 1 0 0 0 -1 -1h-2a1 1 0 0 0 -1 1z" /><path d="M17 7v4a1 1 0 0 0 1 1h3" /><path d="M21 7v10" /></svg>
+      <svg viewBox="0 0 24 24" class="icon"><path d="M3 7v4a1 1 0 0 0 1 1h3" /><path d="M7 7v10" /><path d="M10 8v8a1 1 0 0 0 1 1h2a1 1 0 0 0 1 -1v-8a1 1 0 0 0 -1 -1h-2a1 1 0 0 0 -1 1z" /><path d="M17 7v4a1 1 0 0 0 1 1h3" /><path d="M21 7v10" /></svg>
       <h4>Sorry, no matching pages found</h4>
       <p class="text-muted">Please try changing the search term.</p>
     </div>`;
diff --git a/docs/assets/styles/docs.css b/docs/assets/styles/docs.css
index d5e712c..cdfeb4c 100644
--- a/docs/assets/styles/docs.css
+++ b/docs/assets/styles/docs.css
@@ -395,14 +395,3 @@ pre[class^='language-'] {
     content: 'bash';
   }
 }
-
-/* Icons */
-.icon {
-  width: 1.5rem;
-  height: 1.5rem;
-  fill: none;
-  stroke: currentColor;
-  stroke-width: 1.5;
-  stroke-linecap: round;
-  stroke-linejoin: round;
-}
diff --git a/docs/pages/components/button.md b/docs/pages/components/button.md
index 174a72b..2fc0647 100644
--- a/docs/pages/components/button.md
+++ b/docs/pages/components/button.md
@@ -146,29 +146,29 @@ The beautiful <a href="https://tabler.io/icons" target="_blank">Tabler Icons</a>
 
 <div class="demo flex flex-wrap gap-4">
   <button>
-    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon"><path d="M19.875 6.27a2.225 2.225 0 0 1 1.125 1.948v7.284c0 .809 -.443 1.555 -1.158 1.948l-6.75 4.27a2.269 2.269 0 0 1 -2.184 0l-6.75 -4.27a2.225 2.225 0 0 1 -1.158 -1.948v-7.285c0 -.809 .443 -1.554 1.158 -1.947l6.75 -3.98a2.33 2.33 0 0 1 2.25 0l6.75 3.98h-.033z" /><path d="M12 12m-3 0a3 3 0 1 0 6 0a3 3 0 1 0 -6 0" /></svg>
+    <svg viewBox="0 0 24 24" class="icon"><path d="M19.875 6.27a2.225 2.225 0 0 1 1.125 1.948v7.284c0 .809 -.443 1.555 -1.158 1.948l-6.75 4.27a2.269 2.269 0 0 1 -2.184 0l-6.75 -4.27a2.225 2.225 0 0 1 -1.158 -1.948v-7.285c0 -.809 .443 -1.554 1.158 -1.947l6.75 -3.98a2.33 2.33 0 0 1 2.25 0l6.75 3.98h-.033z" /><path d="M12 12m-3 0a3 3 0 1 0 6 0a3 3 0 1 0 -6 0" /></svg>
     Settings
   </button>
   <button class="hollow alert">
     Donations
-    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon"><path d="M19.5 12.572l-7.5 7.428l-7.5 -7.428a5 5 0 1 1 7.5 -6.566a5 5 0 1 1 7.5 6.572" /></svg>
+    <svg viewBox="0 0 24 24" class="icon"><path d="M19.5 12.572l-7.5 7.428l-7.5 -7.428a5 5 0 1 1 7.5 -6.566a5 5 0 1 1 7.5 6.572" /></svg>
   </button>
   <button class="hollow neutral pill">
-    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon"><path d="M10 10m-7 0a7 7 0 1 0 14 0a7 7 0 1 0 -14 0" /><path d="M21 21l-6 -6" /></svg>
+    <svg viewBox="0 0 24 24" class="icon"><path d="M10 10m-7 0a7 7 0 1 0 14 0a7 7 0 1 0 -14 0" /><path d="M21 21l-6 -6" /></svg>
   </button>
 </div>
 
 ```html
 <button>
-  <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">...</svg>
+  <svg viewBox="0 0 24 24" class="icon">...</svg>
   Settings
 </button>
 <button class="hollow alert">
   Donations
-  <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">...</svg>
+  <svg viewBox="0 0 24 24" class="icon">...</svg>
 </button>
 <button class="hollow neutral pill">
-  <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">...</svg>
+  <svg viewBox="0 0 24 24" class="icon">...</svg>
 </button>
 ```
 
diff --git a/docs/pages/components/card.md b/docs/pages/components/card.md
index 545ec16..088f30e 100644
--- a/docs/pages/components/card.md
+++ b/docs/pages/components/card.md
@@ -74,11 +74,11 @@ A `<footer>` element at the bottom of a `card` container provides space for link
       Noted for their slowness of movement, tree sloths spend most of their lives hanging upside down in the trees of the tropical rainforests of South America and Central America.
       <footer>
         <button class="hollow accent pill">
-          <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon"><path d="M12 5l0 14" /><path d="M5 12l14 0" /></svg>
+          <svg viewBox="0 0 24 24" class="icon"><path d="M12 5l0 14" /><path d="M5 12l14 0" /></svg>
         </button>
         <button class="ghost">
           Source
-          <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon"><path d="M12 6h-6a2 2 0 0 0 -2 2v10a2 2 0 0 0 2 2h10a2 2 0 0 0 2 -2v-6" /><path d="M11 13l9 -9" /><path d="M15 4h5v5" /></svg>
+          <svg viewBox="0 0 24 24" class="icon"><path d="M12 6h-6a2 2 0 0 0 -2 2v10a2 2 0 0 0 2 2h10a2 2 0 0 0 2 -2v-6" /><path d="M11 13l9 -9" /><path d="M15 4h5v5" /></svg>
         </button>
       </footer>
     </article>
@@ -88,7 +88,7 @@ A `<footer>` element at the bottom of a `card` container provides space for link
       <footer>
         <button class="hollow neutral">
           Read more
-          <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon"><path d="M5 12l14 0" /><path d="M13 18l6 -6" /><path d="M13 6l6 6" /></svg>
+          <svg viewBox="0 0 24 24" class="icon"><path d="M5 12l14 0" /><path d="M13 18l6 -6" /><path d="M13 6l6 6" /></svg>
         </button>
       </footer>
     </article>
diff --git a/docs/pages/components/icon.md b/docs/pages/components/icon.md
new file mode 100644
index 0000000..08f4181
--- /dev/null
+++ b/docs/pages/components/icon.md
@@ -0,0 +1,59 @@
+---
+title: 'Components: Icon - Sloth.css'
+description: Vector images for illustration
+tags: symbol size svg vector item sm lg xl stroke thin
+---
+
+## Icon
+
+Icons are very popular illustrations for actions, states, fields etc. Sloth.css doesn't ship any icons on it's own (I mean, come on. There are thousands of awesome icon libs out there!). Instead, Sloth.css offers a nice integration of SVG icons in almost every suitable component. Examples below are from the beautiful <a href="https://tabler.io/icons" target="_blank">Tabler Icons</a>.
+
+### Basic icon
+
+Use the `icon` class on an SVG element to give it a basic size and stroke width. Per default, icons are assumed to be outlined. If you're using filled icons, append the corresponding class `filled`.
+
+<div class="demo">
+  <svg viewBox="0 0 24 24" class="icon filled"><path d="M8.243 7.34l-6.38 .925l-.113 .023a1 1 0 0 0 -.44 1.684l4.622 4.499l-1.09 6.355l-.013 .11a1 1 0 0 0 1.464 .944l5.706 -3l5.693 3l.1 .046a1 1 0 0 0 1.352 -1.1l-1.091 -6.355l4.624 -4.5l.078 -.085a1 1 0 0 0 -.633 -1.62l-6.38 -.926l-2.852 -5.78a1 1 0 0 0 -1.794 0l-2.853 5.78z" /></svg>
+  <svg viewBox="0 0 24 24" class="icon filled"><path d="M12 1a.993 .993 0 0 1 .823 .443l.067 .116l2.852 5.781l6.38 .925c.741 .108 1.08 .94 .703 1.526l-.07 .095l-.078 .086l-4.624 4.499l1.09 6.355a1.001 1.001 0 0 1 -1.249 1.135l-.101 -.035l-.101 -.046l-5.693 -3l-5.706 3c-.105 .055 -.212 .09 -.32 .106l-.106 .01a1.003 1.003 0 0 1 -1.038 -1.06l.013 -.11l1.09 -6.355l-4.623 -4.5a1.001 1.001 0 0 1 .328 -1.647l.113 -.036l.114 -.023l6.379 -.925l2.853 -5.78a.968 .968 0 0 1 .904 -.56zm0 3.274v12.476a1 1 0 0 1 .239 .029l.115 .036l.112 .05l4.363 2.299l-.836 -4.873a1 1 0 0 1 .136 -.696l.07 -.099l.082 -.09l3.546 -3.453l-4.891 -.708a1 1 0 0 1 -.62 -.344l-.073 -.097l-.06 -.106l-2.183 -4.424z" /></svg>
+  <svg viewBox="0 0 24 24" class="icon"><path d="M12 17.75l-6.172 3.245l1.179 -6.873l-5 -4.867l6.9 -1l3.086 -6.253l3.086 6.253l6.9 1l-5 4.867l1.179 6.873z" /></svg>
+</div>
+
+```html
+<svg viewBox="0 0 24 24" class="icon filled">...</svg>
+<svg viewBox="0 0 24 24" class="icon filled">...</svg>
+<svg viewBox="0 0 24 24" class="icon">...</svg>
+```
+
+### Size
+
+Use the `sm`, `lg` and `xl` classes to make the icon smaller or bigger.
+
+<div class="demo">
+  <svg viewBox="0 0 24 24" class="icon sm"><path d="M19.5 12.572l-7.5 7.428l-7.5 -7.428a5 5 0 1 1 7.5 -6.566a5 5 0 1 1 7.5 6.572" /></svg>
+  <svg viewBox="0 0 24 24" class="icon"><path d="M19.5 12.572l-7.5 7.428l-7.5 -7.428a5 5 0 1 1 7.5 -6.566a5 5 0 1 1 7.5 6.572" /></svg>
+  <svg viewBox="0 0 24 24" class="icon lg"><path d="M19.5 12.572l-7.5 7.428l-7.5 -7.428a5 5 0 1 1 7.5 -6.566a5 5 0 1 1 7.5 6.572" /></svg>
+  <svg viewBox="0 0 24 24" class="icon xl"><path d="M19.5 12.572l-7.5 7.428l-7.5 -7.428a5 5 0 1 1 7.5 -6.566a5 5 0 1 1 7.5 6.572" /></svg>
+</div>
+
+```html
+<svg viewBox="0 0 24 24" class="icon sm">...</svg>
+<svg viewBox="0 0 24 24" class="icon">...</svg>
+<svg viewBox="0 0 24 24" class="icon lg">...</svg>
+<svg viewBox="0 0 24 24" class="icon xl">...</svg>
+```
+
+### Stroke width
+
+Use the `stroke-1` or `stroke-2` classes to reduce or increase the icon stroke width.
+
+<div class="demo">
+  <svg viewBox="0 0 24 24" class="icon stroke-1"><path d="M12 6m-8 0a8 3 0 1 0 16 0a8 3 0 1 0 -16 0" /><path d="M4 6v6a8 3 0 0 0 16 0v-6" /><path d="M4 12v6a8 3 0 0 0 16 0v-6" /></svg>
+  <svg viewBox="0 0 24 24" class="icon"><path d="M12 6m-8 0a8 3 0 1 0 16 0a8 3 0 1 0 -16 0" /><path d="M4 6v6a8 3 0 0 0 16 0v-6" /><path d="M4 12v6a8 3 0 0 0 16 0v-6" /></svg>
+  <svg viewBox="0 0 24 24" class="icon stroke-2"><path d="M12 6m-8 0a8 3 0 1 0 16 0a8 3 0 1 0 -16 0" /><path d="M4 6v6a8 3 0 0 0 16 0v-6" /><path d="M4 12v6a8 3 0 0 0 16 0v-6" /></svg>
+</div>
+
+```html
+<svg viewBox="0 0 24 24" class="icon stroke-1">...</svg>
+<svg viewBox="0 0 24 24" class="icon">...</svg>
+<svg viewBox="0 0 24 24" class="icon stroke-2">...</svg>
+```
diff --git a/docs/pages/components/input.md b/docs/pages/components/input.md
index 968dff3..de021c7 100644
--- a/docs/pages/components/input.md
+++ b/docs/pages/components/input.md
@@ -120,21 +120,21 @@ A visual indication of the input fields purpose can be given by using an SVG wit
 
 <div class="demo flex-col gap-4">
   <div class="input w-1/2">
-    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon prefix"><path d="M10 10m-7 0a7 7 0 1 0 14 0a7 7 0 1 0 -14 0" /><path d="M21 21l-6 -6" /></svg>
+    <svg viewBox="0 0 24 24" class="icon prefix"><path d="M10 10m-7 0a7 7 0 1 0 14 0a7 7 0 1 0 -14 0" /><path d="M21 21l-6 -6" /></svg>
     <input type="text" placeholder="Search" />
   </div>
   <div class="input w-1/2">
     <input type="number" placeholder="Phone number" />
-    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon suffix"><path d="M4 3h2a1 1 0 0 1 1 1v2a1 1 0 0 1 -1 1h-2a1 1 0 0 1 -1 -1v-2a1 1 0 0 1 1 -1z" /><path d="M18 3h2a1 1 0 0 1 1 1v2a1 1 0 0 1 -1 1h-2a1 1 0 0 1 -1 -1v-2a1 1 0 0 1 1 -1z" /><path d="M11 3h2a1 1 0 0 1 1 1v2a1 1 0 0 1 -1 1h-2a1 1 0 0 1 -1 -1v-2a1 1 0 0 1 1 -1z" /><path d="M4 10h2a1 1 0 0 1 1 1v2a1 1 0 0 1 -1 1h-2a1 1 0 0 1 -1 -1v-2a1 1 0 0 1 1 -1z" /><path d="M18 10h2a1 1 0 0 1 1 1v2a1 1 0 0 1 -1 1h-2a1 1 0 0 1 -1 -1v-2a1 1 0 0 1 1 -1z" /><path d="M11 10h2a1 1 0 0 1 1 1v2a1 1 0 0 1 -1 1h-2a1 1 0 0 1 -1 -1v-2a1 1 0 0 1 1 -1z" /><path d="M11 17h2a1 1 0 0 1 1 1v2a1 1 0 0 1 -1 1h-2a1 1 0 0 1 -1 -1v-2a1 1 0 0 1 1 -1z" /></svg>
+    <svg viewBox="0 0 24 24" class="icon suffix"><path d="M4 3h2a1 1 0 0 1 1 1v2a1 1 0 0 1 -1 1h-2a1 1 0 0 1 -1 -1v-2a1 1 0 0 1 1 -1z" /><path d="M18 3h2a1 1 0 0 1 1 1v2a1 1 0 0 1 -1 1h-2a1 1 0 0 1 -1 -1v-2a1 1 0 0 1 1 -1z" /><path d="M11 3h2a1 1 0 0 1 1 1v2a1 1 0 0 1 -1 1h-2a1 1 0 0 1 -1 -1v-2a1 1 0 0 1 1 -1z" /><path d="M4 10h2a1 1 0 0 1 1 1v2a1 1 0 0 1 -1 1h-2a1 1 0 0 1 -1 -1v-2a1 1 0 0 1 1 -1z" /><path d="M18 10h2a1 1 0 0 1 1 1v2a1 1 0 0 1 -1 1h-2a1 1 0 0 1 -1 -1v-2a1 1 0 0 1 1 -1z" /><path d="M11 10h2a1 1 0 0 1 1 1v2a1 1 0 0 1 -1 1h-2a1 1 0 0 1 -1 -1v-2a1 1 0 0 1 1 -1z" /><path d="M11 17h2a1 1 0 0 1 1 1v2a1 1 0 0 1 -1 1h-2a1 1 0 0 1 -1 -1v-2a1 1 0 0 1 1 -1z" /></svg>
   </div>
   <div class="input w-1/2">
-    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon prefix"><path d="M9.5 3h5a1.5 1.5 0 0 1 1.5 1.5a3.5 3.5 0 0 1 -3.5 3.5h-1a3.5 3.5 0 0 1 -3.5 -3.5a1.5 1.5 0 0 1 1.5 -1.5z" /><path d="M4 17v-1a8 8 0 1 1 16 0v1a4 4 0 0 1 -4 4h-8a4 4 0 0 1 -4 -4z" /></svg>
+    <svg viewBox="0 0 24 24" class="icon prefix"><path d="M9.5 3h5a1.5 1.5 0 0 1 1.5 1.5a3.5 3.5 0 0 1 -3.5 3.5h-1a3.5 3.5 0 0 1 -3.5 -3.5a1.5 1.5 0 0 1 1.5 -1.5z" /><path d="M4 17v-1a8 8 0 1 1 16 0v1a4 4 0 0 1 -4 4h-8a4 4 0 0 1 -4 -4z" /></svg>
     <select>
       <option>1.000</option>
       <option>25.000</option>
       <option>50.000</option>
     </select>
-    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon suffix"><path d="M17.2 7a6 7 0 1 0 0 10" /><path d="M13 10h-8m0 4h8" /></svg>
+    <svg viewBox="0 0 24 24" class="icon suffix"><path d="M17.2 7a6 7 0 1 0 0 10" /><path d="M13 10h-8m0 4h8" /></svg>
   </div>
 </div>
 
diff --git a/docs/pages/components/modal.md b/docs/pages/components/modal.md
index ecf5175..a8e21eb 100644
--- a/docs/pages/components/modal.md
+++ b/docs/pages/components/modal.md
@@ -21,7 +21,7 @@ Use the `modal` class on a parent element containing an anchor element having th
       <header>
         <h3>The sloth</h3>
         <a class="button ghost pill" href="#close">
-          <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon"><path d="M18 6l-12 12" /><path d="M6 6l12 12" /></svg>
+          <svg viewBox="0 0 24 24" class="icon"><path d="M18 6l-12 12" /><path d="M6 6l12 12" /></svg>
         </a>
       </header>
       <main>
@@ -47,7 +47,7 @@ Use the `modal` class on a parent element containing an anchor element having th
     <header>
       <h3>The sloth</h3>
       <a class="button ghost pill" href="#close">
-        <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon"><path d="M18 6l-12 12" /><path d="M6 6l12 12" /></svg>
+        <svg viewBox="0 0 24 24" class="icon"><path d="M18 6l-12 12" /><path d="M6 6l12 12" /></svg>
       </a>
     </header>
     <main>
@@ -76,7 +76,7 @@ Use the `sm` or `lg` classes to reduce or increase the maximum width of the moda
       <header>
         <h3>Members Area</h3>
         <a class="button ghost pill" href="#close">
-          <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon"><path d="M18 6l-12 12" /><path d="M6 6l12 12" /></svg>
+          <svg viewBox="0 0 24 24" class="icon"><path d="M18 6l-12 12" /><path d="M6 6l12 12" /></svg>
         </a>
       </header>
       <fieldset>
@@ -96,7 +96,7 @@ Use the `sm` or `lg` classes to reduce or increase the maximum width of the moda
       <header>
         <h3>Learn latin</h3>
         <a class="button ghost pill" href="#close">
-          <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon"><path d="M18 6l-12 12" /><path d="M6 6l12 12" /></svg>
+          <svg viewBox="0 0 24 24" class="icon"><path d="M18 6l-12 12" /><path d="M6 6l12 12" /></svg>
         </a>
       </header>
       <main class="flex gap-8">
@@ -123,7 +123,7 @@ Use the `sm` or `lg` classes to reduce or increase the maximum width of the moda
       <header>
         <h3>Cupcake ipsum</h3>
         <a class="button ghost pill" href="#close">
-          <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon"><path d="M18 6l-12 12" /><path d="M6 6l12 12" /></svg>
+          <svg viewBox="0 0 24 24" class="icon"><path d="M18 6l-12 12" /><path d="M6 6l12 12" /></svg>
         </a>
       </header>
       <main class="flex gap-8">
diff --git a/docs/pages/components/state.md b/docs/pages/components/state.md
index 83786bc..a20498d 100644
--- a/docs/pages/components/state.md
+++ b/docs/pages/components/state.md
@@ -14,7 +14,7 @@ Use the `state empty` classes for a placeholder section which awaits user input
 
 <div class="demo">
   <div class="state empty">
-    <svg xmlns="http://www.w3.org/2000/svg" width="64" height="64" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round" ><path d="M14 17m-3 0a3 3 0 1 0 6 0a3 3 0 1 0 -6 0" /><path d="M17 17v-13h4" /><path d="M13 5h-10" /><path d="M3 9l10 0" /><path d="M9 13h-6" /></svg>
+    <svg class="icon xl" viewBox="0 0 24 24"><path d="M14 17m-3 0a3 3 0 1 0 6 0a3 3 0 1 0 -6 0" /><path d="M17 17v-13h4" /><path d="M13 5h-10" /><path d="M3 9l10 0" /><path d="M9 13h-6" /></svg>
     <h3>You have no playlists</h3>
     <p>Click the button to start collecting songs</p>
     <button>Add playlist</button>
@@ -23,7 +23,7 @@ Use the `state empty` classes for a placeholder section which awaits user input
 
 ```html
 <div class="state empty">
-  <svg>...</svg>
+  <svg class="icon xl" viewBox="0 0 24 24">...</svg>
   <h3>You have no playlists</h3>
   <p>Click the button to start collecting songs</p>
   <button>Add playlist</button>
@@ -36,7 +36,7 @@ Use the `state highlighted` classes for an accentuated section e.g. which awaits
 
 <div class="demo">
   <div class="state highlighted">
-    <svg xmlns="http://www.w3.org/2000/svg" width="64" height="64" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"><path d="M19 11v-2a2 2 0 0 0 -2 -2h-8a2 2 0 0 0 -2 2v8a2 2 0 0 0 2 2h2" /><path d="M13 13l9 3l-4 2l-2 4l-3 -9" /><path d="M3 3l0 .01" /><path d="M7 3l0 .01" /><path d="M11 3l0 .01" /><path d="M15 3l0 .01" /><path d="M3 7l0 .01" /><path d="M3 11l0 .01" /><path d="M3 15l0 .01" /></svg>
+    <svg class="icon xl" viewBox="0 0 24 24"><path d="M19 11v-2a2 2 0 0 0 -2 -2h-8a2 2 0 0 0 -2 2v8a2 2 0 0 0 2 2h2" /><path d="M13 13l9 3l-4 2l-2 4l-3 -9" /><path d="M3 3l0 .01" /><path d="M7 3l0 .01" /><path d="M11 3l0 .01" /><path d="M15 3l0 .01" /><path d="M3 7l0 .01" /><path d="M3 11l0 .01" /><path d="M3 15l0 .01" /></svg>
     <h3>Office document conversion</h3>
     <p>Drag supported documents here</p>
   </div>
@@ -44,7 +44,7 @@ Use the `state highlighted` classes for an accentuated section e.g. which awaits
 
 ```html
 <div class="state highlighted">
-  <svg>...</svg>
+  <svg class="icon xl" viewBox="0 0 24 24">...</svg>
   <h3>Office document conversion</h3>
   <p>Drag supported documents here</p>
 </div>
diff --git a/docs/pages/core/form.md b/docs/pages/core/form.md
index 42b18c7..e09ad54 100644
--- a/docs/pages/core/form.md
+++ b/docs/pages/core/form.md
@@ -255,12 +255,12 @@ Buttons can also be created with several `<input>` and `<button` types:
 
 ### Input states
 
-Input fields can be disabled or their value can be invalid on form submit.
+Input fields can be disabled with the corresponding attribute. Also their value can be invalid on input interaction and will be indicated with an alert border color.
 
 <div class="demo">
   <div class="flex flex-col gap-2 max-w-screen-xs">
     <label>Error
-      <input type="text" placeholder="Wrong Input" id="invalid-input" />
+      <input type="text" placeholder="Type something..." id="invalid-input" />
     </label>
     <label>Disabled
       <input type="text" placeholder="Disabled Input" disabled />
diff --git a/docs/pages/getting-started/installation.md b/docs/pages/getting-started/installation.md
index b34abbe..944b966 100644
--- a/docs/pages/getting-started/installation.md
+++ b/docs/pages/getting-started/installation.md
@@ -32,7 +32,7 @@ If you just want to use the drop-in styles or the utility classes or the CSS com
 
 ### Install manually
 
-Download the latest [Sloth.css release]({{ repoUrl }}/releases) (\~10KB):
+Download the latest [Sloth.css release]({{ repoUrl }}/releases) (7.3KB):
 
 <button onclick="window.location.href='{{ repoUrl }}/releases'">Download Sloth.css</button>
 
diff --git a/src/_components.css b/src/_components.css
index b549d38..60acbe4 100644
--- a/src/_components.css
+++ b/src/_components.css
@@ -4,6 +4,7 @@
 @import 'components/_button.css';
 @import 'components/_callout.css';
 @import 'components/_card.css';
+@import 'components/_icon.css';
 @import 'components/_input.css';
 @import 'components/_loader.css';
 @import 'components/_modal.css';
diff --git a/src/components/_button.css b/src/components/_button.css
index 2c4233b..ae87832 100644
--- a/src/components/_button.css
+++ b/src/components/_button.css
@@ -176,16 +176,6 @@ a.button {
     opacity: .5;
   }
 
-  & > .icon {
-    width: 1.5em;
-    height: 1.5em;
-    fill: none;
-    stroke: currentColor;
-    stroke-width: 1.5;
-    stroke-linecap: round;
-    stroke-linejoin: round;
-  }
-
   &.pill {
     border-radius: 9999px;
 
diff --git a/src/components/_icon.css b/src/components/_icon.css
new file mode 100644
index 0000000..f07a2b1
--- /dev/null
+++ b/src/components/_icon.css
@@ -0,0 +1,34 @@
+.icon {
+  width: 1.5rem;
+  height: 1.5rem;
+  fill: none;
+  stroke: currentColor;
+  stroke-width: 1.5;
+  stroke-linecap: round;
+  stroke-linejoin: round;
+
+  &.filled {
+    fill: currentColor;
+    stroke-width: 0;
+  }
+
+  &.sm {
+    width: 1rem;
+    height: 1rem;
+  }
+  &.lg {
+    width: 2.5rem;
+    height: 2.5rem;
+  }
+  &.xl {
+    width: 4rem;
+    height: 4rem;
+  }
+
+  &.stroke-1 {
+    stroke-width: 1;
+  }
+  &.stroke-2 {
+    stroke-width: 2;
+  }
+}
diff --git a/src/components/_input.css b/src/components/_input.css
index 05bc6e4..3029142 100644
--- a/src/components/_input.css
+++ b/src/components/_input.css
@@ -80,13 +80,6 @@ select,
   & > .icon {
     position: absolute;
     top: .625rem;
-    width: 1.5rem;
-    height: 1.5rem;
-    fill: none;
-    stroke: currentColor;
-    stroke-width: 1.5;
-    stroke-linecap: round;
-    stroke-linejoin: round;
     z-index: 15;
 
     &.prefix {
diff --git a/src/core/_form.css b/src/core/_form.css
index 47b41de..85ad073 100644
--- a/src/core/_form.css
+++ b/src/core/_form.css
@@ -44,7 +44,7 @@ input, textarea, select {
     cursor: not-allowed;
     background-color: var(--color-bg-muted);
   }
-  &:invalid {
+  &:user-invalid {
     box-shadow: var(--color-alert) var(--shadow-border);
   }
 }