protypes

hover trick

by Alexus fox

HTML

<p>WHAT'S BEHIND THE BOX YO</p>
<p>↓</p>
<span>→ </span>
<div class="b-block">
  <div class="b-block__hoverer"></div>
  <div class="b-block__hoverer"></div>
  <div class="b-block__hoverer"></div>
  <div class="b-block__hoverer"></div>

  <div class="b-block__content">
    PEEK A BOO!
  </div>
</div>
<span> ←</span>
<p>↑</p>

CSS

.b-block {
  position: relative;
  display: inline-block;
  overflow: hidden;
  width: 10em;
  height: 10em;
  vertical-align: middle;
  -webkit-transform: translateZ(0);
}


/* The blocks that would be hovered */

.b-block__hoverer {
  position: absolute;
  z-index: 1;
  width: 71%;
  height: 71%;
  -webkit-transform: rotate(45deg);
  -moz-transform: rotate(45deg);
  -o-transform: rotate(45deg);
  transform: rotate(45deg);
}


/* Positioning for hoverers */

.b-block__hoverer:nth-child(1) {
  top: 0;
  right: 0;
  -webkit-transform-origin: 100% 0;
  -moz-transform-origin: 100% 0;
  -o-transform-origin: 100% 0;
  transform-origin: 100% 0;
}

.b-block__hoverer:nth-child(2) {
  bottom: 0;
  right: 0;
  -webkit-transform-origin: 100% 100%;
  -moz-transform-origin: 100% 100%;
  -o-transform-origin: 100% 100%;
  transform-origin: 100% 100%;
}

.b-block__hoverer:nth-child(3) {
  bottom: 0;
  left: 0;
  -webkit-transform-origin: 0 100%;
  -moz-transform-origin: 0 100%;
  -o-transform-origin: 0 100%;
  transform-origin: 0 100%;
}

.b-block__hoverer:nth-child(4) {
  top: 0;
  left: 0;
  -webkit-transform-origin: 0 0;
  -moz-transform-origin: 0 0;
  -o-transform-origin: 0 0;
  transform-origin: 0 0;
}


/* Enlarge the hoverer to cover the whole area */

.b-block__hoverer:hover {
  z-index: 9;
  width: 100%;
  height: 100%;
  -webkit-transform: none;
  -moz-transform: none;
  -o-transform: none;
  transform: none;
}


/* Styles for content block */

.b-block__content {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  text-align: center;
  line-height: 10em;
  background: #333;
  color: #FFF;
  /* Restore the antialiasing lost from translateZ */
  -webkit-font-smoothing: subpixel-antialiased;
  -webkit-transition: all .3s ease;
  -moz-transition: all .3s ease;
  -o-transition: all .3s ease;
  transition: all .3s ease;
  -webkit-box-shadow: 0 -10em 0 0 red, 10em 0 0 0 blue, 0 10em 0 0 lime, -10em 0 0 0 orange;
  -moz-box-shadow: 0 -10em 0 0 red,...