How to Create an Illusion of Stacked Elements with CSS3 Pseudo-Elements
Tom Kenny demonstrates how you can create the illusion of simple stacked elements with CSS3 pseudo-elements.
HTML
<div>
<img src="image1.jpg" />
</div>
CSS
.stack { position: relative; z-index: 10; }
/* Image styles */
.stack img { max-width: 100%; height: auto; vertical-align: bottom; border: 10px solid #fff; border-radius: 3px;
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
-webkit-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
box-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}
/* Stacks creted by the use of generated content */
.stack:before, .stack:after { content: ""; border-radius: 3px; width: 100%; height: 100%; position: absolute; border: 10px solid #fff; left: 0;
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
-webkit-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
box-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
-webkit-transition: 0.3s all ease-out;
-moz-transition: 0.3s all ease-out;
transition: 0.3s all ease-out;
}
.stack:before { top: 4px; z-index: -10; } /* 1st element in stack (behind image) */
.stack:after { top: 8px; z-index: -20; } /* 2nd element in stack (behind image) */
When creating other examples, rotate the :before and :after elements a little.
Second stack example:
/* Second stack example (rotated to the right from the bottom left) */
.stack.rotated:before {
-webkit-transform-origin: bottom left;
-moz-transform-origin: bottom left;
transform-origin: bottom left;
-webkit-transform: rotate(2deg);
-moz-transform: rotate(2deg);
transform: rotate(2deg);
}
.stack.rotated:after {
-webkit-transform-origin: bottom left;
-moz-transform-origin: bottom left;
transform-origin: bottom left;
-webkit-transform: rotate(4deg);
-moz-transform: rotate(4deg);
transform: rotate(4deg);
}
Third stack example
/* Third stack example (One stack element rotated in the opposite direction) */
.stack.twisted:before {
-webkit-transform: rotate(4deg);
-moz-transform: rotate(4deg);
transform: rotate(4deg);
}
.stack.twisted:after {
-webkit-transform: rotate(-4deg);
-moz-transform: rotate(-4deg);
transform: rotate(-4deg);
}
Fourth stack example
/* Fourth stack example (Similar to the second but rotated left) */
.stack.rotated-left:before {
-webkit-transform-origin: bottom left;
-moz-transform-origin: bottom left;
transform-origin: bottom left;
-webkit-transform: rotate(-3deg);
-moz-transform: rotate(-3deg);
transform: rotate(-3deg);
}
.stack.rotated-left:after {
-webkit-transform-origin: bottom left;
-moz-transform-origin: bottom left;
transform-origin: bottom left;
-webkit-transform: rotate(-6deg);
-moz-transform: rotate(-6deg);
transform: rotate(-6deg);
}
Reset on hover to go back to its original style.
/* Reset all rotations on hover */
.stack:hover:before, .stack:hover:after {
-webkit-transform: rotate(0deg);
-moz-transform: rotate(0deg);
transform: rotate(0deg);
}
Reminder: Firefox currently supports transitions on :before and :after.
To know more about the tutorial, click on the image.
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