A Pen by A Non Ymous.

fgCsw.markdown

fgCsw

Forked from Louis Lazaris's Pen zqpEg.

A Pen by Anonasaurus Rex on CodePen.

License.

index.html

<div class="circle"></div>

style.css

.circle {
  width: 150px;
  height: 150px;
  background: red;
  margin-top: 20px;
  margin-left: auto;
  margin-right: auto;
  border-radius: 50%;
      border: 10px solid #E6E6E6;
                               
       background-color: white;
  -webkit-transition: background-color 4s ease-out;
  -moz-transition: background-color 4s ease-out;
  -o-transition: background-color 4s ease-out;
  transition: background-color 4s ease-out;
}

.circle:hover {
  background-color: green;
  cursor: pointer;
}