A Pen by Chris DeMars.

index.html

<h1>Neat CSS3 Fun Things! HOVER TO SEE!!</h1>
<div class="box red"></div>
<div class="box blue"></div>
<div class="box yellow"></div>
<div class="box green"></div>
  

style.css

h1 {
  font-size: 40px;
  text-align: center;
  margin-top: 10px;
}
.box {
  width: 100px;
  height: 100px;
  display: inline-block;
  margin-left: 50px;
  margin-top: 50px;
  -webkit-transition: width 2s;
  transition: width 2s;
}

.red {
  background-color: red;
  transition-property: background;
  transition-duration: 1s;
  transition-timing-function: linear;
}

  .red:hover {
    background: darkred;
  }

.blue {
  background-color: blue;
  border-radius: 6px;
  transition-property: background, border-radius;
  transition-duration: .5s;
  transition-timing-function: linear;
}
  
  .blue:hover {
    background: lightblue;
    border-radius: 50%;
  }
.yellow {
  background-color: yellow;
  -webkit-transform: rotate(20deg);
  -moz-transform: rotate(20deg);
  -o-transform: rotate(20deg);
  transform: rotate(20deg);
}

.green {
  background-color: green;
}

yLqjG.markdown

yLqjG

A Pen by Chris DeMars on CodePen.

License.