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30 Seconds of CSS

A curated collection of useful CSS snippets you can understand in 30 seconds or less.

Star

Bouncing loaderanimation

Creates a bouncing loader animation.

HTML

<div class="bouncing-loader">
+     30 Seconds of CSS         
 
 
  
30 Seconds of CSS
 
 A curated collection of useful CSS snippets you can understand in 30 seconds or less. 
 Star 
 
 
 
  
 
Bouncing loaderanimation
 
Creates a bouncing loader animation.
 
HTML
<div class="bouncing-loader">
   <div></div>
   <div></div>
   <div></div>
@@ -31,7 +31,7 @@
 .bouncing-loader > div:nth-of-type(3) {
   animation-delay: 0.4s;
 }
-
 
Demo
 
 
 
 
 
 
 
  
Explanation
 
Note: 1rem is usually 16px.
 
     
  1.  
    @keyframes defines an animation that has two states, where the element changes opacity, and is translated up on the 2D plane using transform: translateY().
     
    2.  
  2.  
    .bouncing-loader is the parent container of the bouncing circles and uses display: flex and justify-content: center to position them in the in the center.
     
    3.  
  3.  
    Using .bouncing-loader > div, we target the three child divs of the parent to be styled. The divs are given a width and height of 1rem, using border-radius: 50% to turn them from squares to circles.
     
    4.  
  4.  
    margin: 3rem 0.2rem specifies that each circle has a top/bottom margin of 3rem and left/right margin of 0.2rem so that they do not directly touch each other, giving them some breathing room.
     
    5.  
  5.  
    animation is a shorthand property for the various animation properties: animation-name, animation-duration, animation-iteration-count, animation-direction are used.
     
    6.  
  6.  
    animation-delay is used on the second and third div respectively, so that each element does not start the animation at the same time.
     
    7.  
 
Browser support
 
 
 94.8% 
 
 
✅ No caveats.
   
 
 
Box-sizing resetlayout
 
Resets the box-model so that widths and heights are not affected by their borders or padding.
 
CSS
html {
+
 
Demo
 
 
 
 
 
 
 
  
Explanation
 
Note: 1rem is usually 16px.
 
     
  1.  
    @keyframes defines an animation that has two states, where the element changes opacity, and is translated up on the 2D plane using transform: translateY().
     
    2.  
  2.  
    .bouncing-loader is the parent container of the bouncing circles and uses display: flex and justify-content: center to position them in the in the center.
     
    3.  
  3.  
    Using .bouncing-loader > div, we target the three child divs of the parent to be styled. The divs are given a width and height of 1rem, using border-radius: 50% to turn them from squares to circles.
     
    4.  
  4.  
    margin: 3rem 0.2rem specifies that each circle has a top/bottom margin of 3rem and left/right margin of 0.2rem so that they do not directly touch each other, giving them some breathing room.
     
    5.  
  5.  
    animation is a shorthand property for the various animation properties: animation-name, animation-duration, animation-iteration-count, animation-direction are used.
     
    6.  
  6.  
    animation-delay is used on the second and third div respectively, so that each element does not start the animation at the same time.
     
    7.  
 
Browser support
 
 
 94.8% 
 
 
✅ No caveats.
   
 
 
Box-sizing resetlayout
 
Resets the box-model so that widths and heights are not affected by their borders or padding.
 
CSS
html {
   box-sizing: border-box;
 }
 *,
@@ -322,7 +322,14 @@ var y = e.pageY - btn.offsetTop - btn.offsetParent.offsetTop
   background-color: rgba(0, 150, 255, 0.3);
   text-shadow: none;
 }
-
 
Demo
 
 
Pretty text underline without clipping descending letters.
 
  
Explanation
 
     
  1. text-shadow: ... has 4 values with offsets that cover a 4x4 px area to ensure the underline has a "thick" shadow that covers the line where descenders clip it. Use a color that matches the background. For a larger font, use a larger px size.
    2.  
  2. background-image: linear-gradient(...) creates a 90deg gradient with the current text color (currentColor).
    3.  
  3. The background-* properties size the gradient as 1x1px at the bottom and repeats it along the x-axis.
    4.  
  4. The ::selection pseudo selector ensures the text shadow does not interfere with text selection. 
    5.  
 
Browser support
 
 
 94.8% 
 
 
⚠️ The distance of the underline from the text depends on the internal metrics of a font, so you must ensure everyone sees the same font (i.e. no system fonts which will change based on the OS).
   
 
 
Shape separatorvisual
 
Uses an SVG shape to separate two different blocks to create more a interesting visual appearance compared to standard horizontal separation.
 
HTML
<div class="shape-separator"></div>
+
 
Demo
 
 
Pretty text underline without clipping descending letters.
 
  
Explanation
 
     
  1. text-shadow: ... has 4 values with offsets that cover a 4x4 px area to ensure the underline has a "thick" shadow that covers the line where descenders clip it. Use a color that matches the background. For a larger font, use a larger px size.
    2.  
  2. background-image: linear-gradient(...) creates a 90deg gradient with the current text color (currentColor).
    3.  
  3. The background-* properties size the gradient as 1x1px at the bottom and repeats it along the x-axis.
    4.  
  4. The ::selection pseudo selector ensures the text shadow does not interfere with text selection. 
    5.  
 
Browser support
 
 
 94.8% 
 
 
⚠️ The distance of the underline from the text depends on the internal metrics of a font, so you must ensure everyone sees the same font (i.e. no system fonts which will change based on the OS).
   
 
 
Reset all stylesvisual
 
Resets all styles to default values with one property. This will not affect direction and unicode-bidi properties.
 
HTML
<div class="reset-all-styles">
+  <h4>Title</h4>
+  <p>Lorem ipsum dolor sit amet consectetur adipisicing elit. Iure id exercitationem nulla qui repellat laborum vitae, molestias tempora velit natus. Quas, assumenda nisi. Quisquam enim qui iure, consequatur velit sit?</p>
+</div>
+
 
CSS
.reset-all-styles {
+  all: initial;
+}
+
 
Demo
 
 
 
Title
 
Lorem ipsum dolor sit amet consectetur adipisicing elit. Iure id exercitationem nulla qui repellat laborum vitae, molestias tempora velit natus. Quas, assumenda nisi. Quisquam enim qui iure, consequatur velit sit?
 
 
  
Explanation
 
The all property allows you to reset all styles (inherited or not) to default values.
 
Browser support
 
 
 87.5% 
 
 
⚠️ MS Edge status is under consideration.
   
 
 
Shape separatorvisual
 
Uses an SVG shape to separate two different blocks to create more a interesting visual appearance compared to standard horizontal separation.
 
HTML
<div class="shape-separator"></div>
 
 
CSS
.shape-separator {
   position: relative;
   height: 48px;
diff --git a/index.html b/index.html
index 09ac16a20..e6d9a8b04 100644
--- a/index.html
+++ b/index.html
@@ -37,6 +37,7 @@
           Hairline border
           Overflow scroll gradient
           Pretty text underline
+          Reset all styles
           Shape separator
           System font stack
           Triangle
@@ -1414,6 +1415,47 @@ var y = e.pageY - btn.offsetTop - btn.offsetParent.offsetTop
 
             
           

+          

+            
Reset all stylesvisual

+            
Resets all styles to default values with one property. This will not affect direction and unicode-bidi properties.

+            
HTML
<div class="reset-all-styles">
+  <h4>Title</h4>
+  <p>Lorem ipsum dolor sit amet consectetur adipisicing elit. Iure id exercitationem nulla qui repellat laborum vitae, molestias tempora velit natus. Quas, assumenda nisi. Quisquam enim qui iure, consequatur velit sit?</p>
+</div>
+

+            
CSS
.reset-all-styles {
+  all: initial;
+}
+

+            
Demo

+            

+              

+                
Title

+                
Lorem ipsum dolor sit amet consectetur adipisicing elit. Iure id exercitationem nulla qui repellat laborum vitae, molestias tempora velit natus. Quas, assumenda nisi. Quisquam enim qui iure, consequatur velit sit?

+              

+            

+            
+            
Explanation

+            
The all property allows you to reset all styles (inherited or not) to default values.

+            
Browser support

+            

+              

+                87.5%
+              

+            

+            
⚠️ MS Edge status is under consideration.

+            
+
+            
+          

           

             
Shape separatorvisual

             
Uses an SVG shape to separate two different blocks to create more a interesting visual appearance compared to standard horizontal separation.

diff --git a/snippets/reset-all-styles.md b/snippets/reset-all-styles.md
index f28abdc9a..7d707a5ae 100644
--- a/snippets/reset-all-styles.md
+++ b/snippets/reset-all-styles.md
@@ -43,3 +43,5 @@ The `all` property allows you to reset all styles (inherited or not) to default
 ⚠️ MS Edge status is under consideration.
 
 * https://caniuse.com/#feat=css-all
+
+