qdxzjL

index.html

.block
  .wrapper
    .line.first
    .line.second
    .line.third

qdxzjL.markdown

qdxzjL

A Pen by Captain Anonymous on CodePen.

License.

style.css

body {
  width: 100px;
  margin: auto;
  padding: 100px;
}
.block {
  width: 48px;
  height: 48px;
  background: #FF6666;
  border-radius: 2px;
  padding: 12px;
  box-sizing: border-box;
  cursor: pointer;
}
.wrapper {
  height: 100%;
  width: 100%;
  position: relative;
}
.line {
  height: 3px;
  background: #fff;
  position: absolute;
  width: 100%;
  transition: top .1s ease-in, transform .1s ease-in .1s;
}
.line.first {
  top: 3px;
}
.line.second {
  top: 10px;
  transition: opacity .2s ease-out;
}
.line.third {
  top: 17px;
}
.block:hover .line.first {
  top: 10px;
  transform: rotate(45deg);
}
.block:hover .line.third {
  top: 10px;
   transform: rotate(-45deg);
}
.block:hover .line.second {
  opacity: 0;
}