QbmWgd

index.html

.layer
  .button.block1
    .wrapper
      .line.first
      .line.second
      .line.third
  .button.block2
    .wrapper
      .line.first
      .line.second
      .line.third
  .button.block3
    .wrapper
      .line.first
      .line.second
      .line.third

QbmWgd.markdown

QbmWgd

A Pen by Alexander Belov on CodePen.

License.

script.js

$(document).ready(function() {
  $('.button').on('click', function(e) {
    var element = $(this),
        className = 'opened';
    element.hasClass(className) ? 
      element.removeClass(className) : 
      element.addClass(className);
  });
});

scripts

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

style.css

.layer {
  width: 300px;
  margin: auto;
  padding: 40px;
  text-align: center;
}
.layer .button {
  margin: 0 10px;
}
.button {
  width: 48px;
  height: 48px;
  background: #FF6666;
  border-radius: 2px;
  padding: 12px;
  box-sizing: border-box;
  cursor: pointer;
  display: inline-block;
}
.wrapper {
  height: 100%;
  width: 100%;
  position: relative;
  overflow: hidden;
}
.line {
  height: 3px;
  background: #fff;
  position: absolute;
  width: 100%;
  transition: top .1s ease-in, 
    transform .2s cubic-bezier(0.18, 0.89, 0.32, 1.28) .1s;
}
.line.first {
  top: 3px;
}
.line.second {
  top: 10px;
  transition: right .15s ease-out, opacity .3s ease-in;
  right: 0;
  opacity: 1;
}
.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;
  opacity: 0;
}
.block2 {
  background: #FFB115;
}
.block3 {
  background: #7893A6;
}