.hamburger{
  padding: 15px 15px;
  display: inline-block;
  cursor: pointer;
  transition-property: opacity, filter;
  transition-duration: 0.15s;
  transition-timing-function: linear;
  font: inherit;
  color: inherit;
  text-transform: none;
  background-color: transparent;
  border: 0;
  margin: 0;
  overflow: visible;
}

.hamburger-box{
  width: 40px;
  height: 24px;
  display: inline-block;
  position: relative;
}

.hamburger-inner{
  display: block;
  top: 50%;
  margin-top: -2px;
}
  	.hamburger-inner, .hamburger-inner::before, .hamburger-inner::after{
		width: 40px;
		height: 4px;
		background-color: #fff;
		border-radius: 4px;
		position: absolute;
		transition-property: transform;
		transition-duration: 0.15s;
		transition-timing-function: ease;
	}
  	.hamburger-inner::before, .hamburger-inner::after{
		content: "";
		display: block;
	}
  	.hamburger-inner::before{
   		top: -10px;
	}
  	.hamburger-inner::after{
   		bottom: -10px;
	}

/** Spin **/
.hamburger--spin .hamburger-inner {
  transition-duration: 0.3s;
  transition-timing-function: cubic-bezier(0.55, 0.055, 0.675, 0.19); }
  .hamburger--spin .hamburger-inner::before {
    transition: top 0.1s 0.34s ease-in, opacity 0.1s ease-in; }
  .hamburger--spin .hamburger-inner::after {
    transition: bottom 0.1s 0.34s ease-in, transform 0.3s cubic-bezier(0.55, 0.055, 0.675, 0.19); }

.hamburger--spin.is-active .hamburger-inner {
  transform: rotate(225deg);
  transition-delay: 0.14s;
  transition-timing-function: cubic-bezier(0.215, 0.61, 0.355, 1); }
  .hamburger--spin.is-active .hamburger-inner::before {
    top: 0;
    opacity: 0;
    transition: top 0.1s ease-out, opacity 0.1s 0.14s ease-out; }
  .hamburger--spin.is-active .hamburger-inner::after {
    bottom: 0;
    transform: rotate(-90deg);
    transition: bottom 0.1s ease-out, transform 0.3s 0.14s cubic-bezier(0.215, 0.61, 0.355, 1); }

/** Spin Reverse **/
.hamburger--spin-r .hamburger-inner {
  transition-duration: 0.3s;
  transition-timing-function: cubic-bezier(0.55, 0.055, 0.675, 0.19); }
  .hamburger--spin-r .hamburger-inner::before {
    transition: top 0.1s 0.34s ease-in, opacity 0.1s ease-in; }
  .hamburger--spin-r .hamburger-inner::after {
    transition: bottom 0.1s 0.34s ease-in, transform 0.3s cubic-bezier(0.55, 0.055, 0.675, 0.19); }

.hamburger--spin-r.is-active .hamburger-inner {
  transform: rotate(-225deg);
  transition-delay: 0.14s;
  transition-timing-function: cubic-bezier(0.215, 0.61, 0.355, 1); }
  .hamburger--spin-r.is-active .hamburger-inner::before {
    top: 0;
    opacity: 0;
    transition: top 0.1s ease-out, opacity 0.1s 0.14s ease-out; }
  .hamburger--spin-r.is-active .hamburger-inner::after {
    bottom: 0;
    transform: rotate(90deg);
    transition: bottom 0.1s ease-out, transform 0.3s 0.14s cubic-bezier(0.215, 0.61, 0.355, 1); }