.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:hover {
      opacity: 0.7; }
    .hamburger.is-active:hover {
      opacity: 0.7; }
    .hamburger.is-active .hamburger-inner,
    .hamburger.is-active .hamburger-inner::before,
    .hamburger.is-active .hamburger-inner::after {
      background-color: #000; }
  
  .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;
      box-shadow: 0 0 2px 1px rgba(0, 0, 0, 0.423);
      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; }
      .hamburger--collapse .hamburger-inner {
        top: auto;
        bottom: 0;
        transition-duration: 0.13s;
        transition-delay: 0.13s;
        transition-timing-function: cubic-bezier(0.55, 0.055, 0.675, 0.19); }
        .hamburger--collapse .hamburger-inner::after {
          top: -20px;
          transition: top 0.2s 0.2s cubic-bezier(0.33333, 0.66667, 0.66667, 1), opacity 0.1s linear; }
        .hamburger--collapse .hamburger-inner::before {
          transition: top 0.12s 0.2s cubic-bezier(0.33333, 0.66667, 0.66667, 1), transform 0.13s cubic-bezier(0.55, 0.055, 0.675, 0.19); 
       }
          
      .hamburger--collapse.is-active .hamburger-inner {
        transform: translate3d(0, -10px, 0) rotate(-45deg);
        transition-delay: 0.22s;
        transition-timing-function: cubic-bezier(0.215, 0.61, 0.355, 1);
        background: linear-gradient(45deg,rgb(245, 247, 250) 0% , rgb(241, 245, 250) 100%) }
        .hamburger--collapse.is-active .hamburger-inner::after {
          top: 0;
          opacity: 0;
          transition: top 0.2s cubic-bezier(0.33333, 0, 0.66667, 0.33333), opacity 0.1s 0.22s linear; 
          background: linear-gradient(45deg,rgb(245, 247, 250) 0% , rgb(241, 245, 250) 100%)}
        .hamburger--collapse.is-active .hamburger-inner::before {
          top: 0;
          transform: rotate(-90deg);
          transition: top 0.1s 0.16s cubic-bezier(0.33333, 0, 0.66667, 0.33333), transform 0.13s 0.25s cubic-bezier(0.215, 0.61, 0.355, 1); 
          background: linear-gradient(45deg,rgb(245, 247, 250) 0% , rgb(241, 245, 250) 100%)}
      
      /*
         * Collapse Reverse
         */
@media all and (max-width:480px){
  .hamburger-box {
    width: 30px;
    height: 15px;
    display: inline-block;
    position: relative; }
  
  .hamburger-inner {
    display: block;
    top: 50%;
    margin-top: -2px; }
    .hamburger-inner, .hamburger-inner::before, .hamburger-inner::after {
      width: 25px;
      height: 3px;
     
      background-color: #fff;
      box-shadow: 0 0 2px 1px rgba(0, 0, 0, 0.423);
      border-radius: 4px;
      position: absolute;
      transition-property: transform;
      transition-duration: 0.15s;
      transition-timing-function: ease; }
      .hamburger-inner::before {
        top: -6px; }
        .hamburger--collapse .hamburger-inner::after {
          top: -12px;
          transition: top 0.2s 0.2s cubic-bezier(0.33333, 0.66667, 0.66667, 1), opacity 0.1s linear; }
}