@import url(https://fonts.googleapis.com/css?family=Open+Sans:700,300);
.frame {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 400px;
  height: 400px;
  margin-top: -200px;
  margin-left: -200px;
  border-radius: 2px;
  box-shadow: 4px 8px 16px 0 rgba(0, 0, 0, 0.1);
  overflow: hidden;
  background: #3FAF82;
  color: #333;
  font-family: "Open Sans", Helvetica, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
.frame .center .middle:before, .frame .center .middle:after, .frame .center .middle {
  width: 5rem;
  height: 0.5rem;
  background: #fff;
  border-radius: 0.2rem;
  box-shadow: 1px 1px 2px rgba(30, 30, 30, 0.3);
  z-index: 0;
}
.frame .center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 5rem;
  height: 3rem;
}
.frame .center input[type=checkbox] {
  position: absolute;
  width: 3.6rem;
  height: 3.6rem;
  left: 0.7rem;
  z-index: 1;
  opacity: 0;
}
.frame .center .middle {
  position: relative;
  top: 50%;
  transition: transform 0.3s 0s;
}
.frame .center .middle:before, .frame .center .middle:after {
  content: "";
  position: absolute;
}
.frame .center .middle:before {
  bottom: 1.5rem;
  transition: bottom 0.3s 0.3s, transform 0.3s 0s;
}
.frame .center .middle:after {
  top: 1.5rem;
  transition: top 0.3s 0.3s, transform 0.3s 0s;
}
.frame .center input[type=checkbox]:checked + .middle {
  transform: rotate(45deg);
  transition: transform 0.3s 0.3s;
}
.frame .center input[type=checkbox]:checked + .middle:before {
  bottom: 0;
  transform: rotate(90deg);
  transition: bottom 0.3s 0s, transform 0.3s 0.3s;
}
.frame .center input[type=checkbox]:checked + .middle:after {
  top: 0;
  transform: rotate(90deg);
  transition: top 0.3s 0s, transform 0.3s 0.3s;
}

/*# sourceMappingURL=index.css.map */