Bouncing loader
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.
Bouncing loader
Creates a bouncing loader animation.
HTML
<div class="bouncing-loader">
<div></div>
<div></div>
<div></div>
@@ -27,7 +27,7 @@
.bouncing-loader > div:nth-child(3) {
animation-delay: 0.4s;
}
-
Demo
Explanation
Note: 1rem is usually 16px.
-
@keyframes defines an animation that has two states, where the element changes opacity and is translated up on the 2D plane using transform: translate3d(). Using a single axis translation on transform: translate3d() improves the performance of the animation.
-
.bouncing-loader is the parent container of the bouncing circles and uses display: flex and justify-content: center to position them in the center.
-
.bouncing-loader > div, targets 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.
-
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.
-
animation is a shorthand property for the various animation properties: animation-name, animation-duration, animation-iteration-count, animation-direction are used.
-
nth-child(n) targets the element which is the nth child of its parent.
-
animation-delay is used on the second and third div respectively, so that each element does not start the animation at the same time.
Browser support
93.4% ✅ No caveats.
Box-sizing reset
Resets the box-model so that widths and heights are not affected by their borders or padding.
HTML
<div class="box">border-box</div>
+
Demo
Explanation
Note: 1rem is usually 16px.
-
@keyframes defines an animation that has two states, where the element changes opacity and is translated up on the 2D plane using transform: translate3d(). Using a single axis translation on transform: translate3d() improves the performance of the animation.
-
.bouncing-loader is the parent container of the bouncing circles and uses display: flex and justify-content: center to position them in the center.
-
.bouncing-loader > div, targets 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.
-
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.
-
animation is a shorthand property for the various animation properties: animation-name, animation-duration, animation-iteration-count, animation-direction are used.
-
nth-child(n) targets the element which is the nth child of its parent.
-
animation-delay is used on the second and third div respectively, so that each element does not start the animation at the same time.
Browser support
93.4% ✅ No caveats.
Box-sizing reset
Resets the box-model so that widths and heights are not affected by their borders or padding.
HTML
<div class="box">border-box</div>
<div class="box content-box">content-box</div>
CSS
html {
box-sizing: border-box;
@@ -293,16 +293,13 @@ li::before {
}
Demo
Centered content. Explanation
display: flex enables flexbox.justify-content: center centers the child horizontally.align-items: center centers the child vertically.
Browser support
95.5% ⚠️ Needs prefixes for full support.
Focus Within
Changes the appearance of a form if any of its children are focused.
HTML
<div class="focus-within">
<form>
- <label for="given_name">Given Name:</label>
- <input id="given_name" type="text">
- <br>
- <label for="family_name">Family Name:</label>
- <input id="family_name" type="text">
+ <label for="given_name">Given Name:</label> <input id="given_name" type="text" /> <br />
+ <label for="family_name">Family Name:</label> <input id="family_name" type="text" />
</form>
</div>
CSS
form {
border: 3px solid #2d98da;
- color: #000000;
+ color: #000000;
padding: 4px;
}
form:focus-within {
@@ -340,7 +337,26 @@ form:focus-within {
width: 100vw;
height: 100vh;
}
-
Demo
Click the button below to enter the element into fullscreen mode.
I change color in fullscreen mode!
Explanation
fullscreen CSS pseudo-class selector is used to select and style an element that is being displayed in fullscreen mode.
Browser support
81.6% 83.38
Gradient text
Gives text a gradient color.
HTML
<p class="gradient-text">Gradient text</p>
+
Demo
Click the button below to enter the element into fullscreen mode.
I change color in fullscreen mode!
Explanation
fullscreen CSS pseudo-class selector is used to select and style an element that is being displayed in fullscreen mode.
Browser support
81.6% 83.38
Ghost trick
Vertically centers an element in another.
HTML
<div class="ghost-trick">
+ <div class="ghosting">
+ <p>Vertically centered without changing the position property.</p>
+ </div>
+</div>
+
CSS
.ghosting {
+ height: 300px;
+ background: #0ff;
+}
+.ghosting:before {
+ content: "";
+ display: inline-block;
+ height: 100%;
+ vertical-align: middle;
+}
+p {
+ display: inline-block;
+ vertical-align: middle;
+}
+
Demo
Vertically centered without changing the position property.
Explanation
Use the style of a :before pseudo-element to vertically align inline elements without changing their position property.
Browser support
95.9% Gradient text
Gives text a gradient color.
HTML
<p class="gradient-text">Gradient text</p>
CSS
.gradient-text {
background: -webkit-linear-gradient(pink, red);
-webkit-text-fill-color: transparent;
diff --git a/index.html b/index.html
index 089fd54b5..2cde4f718 100644
--- a/index.html
+++ b/index.html
@@ -30,7 +30,7 @@
+
+ Ghost trick
+ Vertically centers an element in another.
+ HTML
<div class="ghost-trick">
+ <div class="ghosting">
+ <p>Vertically centered without changing the position property.</p>
+ </div>
+</div>
+
+ CSS
.ghosting {
+ height: 300px;
+ background: #0ff;
+}
+.ghosting:before {
+ content: "";
+ display: inline-block;
+ height: 100%;
+ vertical-align: middle;
+}
+p {
+ display: inline-block;
+ vertical-align: middle;
+}
+
+ Demo
+
+
+
+ Vertically centered without changing the position property.
+
+
+
+
+ Explanation
+ Use the style of a :before pseudo-element to vertically align inline elements without changing their position property.
+ Browser support
+
+
+ 95.9%
+
+
+
+
+
+
Gradient text
Gives text a gradient color.
diff --git a/snippets/ghost-trick.md b/snippets/ghost-trick.md
index 323e9e7eb..46d1cd866 100644
--- a/snippets/ghost-trick.md
+++ b/snippets/ghost-trick.md
@@ -6,9 +6,7 @@ Vertically centers an element in another.
```html
-
- Vertically centered without changing the position property.
-
+ Vertically centered without changing the position property.
```
@@ -21,7 +19,7 @@ Vertically centers an element in another.
}
.ghosting:before {
- content: "";
+ content: '';
display: inline-block;
height: 100%;
vertical-align: middle;