mJXZqy

index.html

#button.block
  .wrapper
    .line.first
    .line.second
    .line.third

mJXZqy.markdown

mJXZqy

Forked from Captain Anonymous's Pen qdxzjL.

A Pen by Alexander Belov on CodePen.

License.

script.js

$(document).ready(function() {
  $('#button').on('click', function(e) {
    if ($(this).hasClass('opened')) {
      $(this).removeClass('opened')
    } else {
      $(this).addClass('opened')
    }
  });
});

scripts

<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>

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;
  overflow: hidden;
}
.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: all .2s ease-in;
  right: 0;
}
.line.third {
  top: 17px;
}

.opened .line.first {
  top: 10px;
  transform: rotate(45deg);
}
.opened .line.third {
  top: 10px;
  transform: rotate(-45deg);
}
.opened .line.second {
  right: 40px;
}

.block:hover:not(.opened) .line.second {
  opacity: 0.8;
}