/* Important styles */

  
  #toggle span:after,
  #toggle span:before {
    content: "";
    position: absolute;
    left: 0;
    top: -9px;
  }
  #toggle span:after{
    top: 9px;
  }
  #toggle span {
    position: relative;
    display: block;
  }
  
  #toggle span,
  #toggle span:after,
  #toggle span:before {
    width: 100%;
    height: 5px;
    background-color: #fef9c3;
    transition: all 0.3s;
    backface-visibility: hidden;
    border-radius: 2px;
  }
  
  /* on activation */
  #toggle.on span {
    background-color: transparent;
  }
  #toggle.on span:before {
    transform: rotate(45deg) translate(5px, 5px);
  }
  #toggle.on span:after {
    transform: rotate(-45deg) translate(7px, -8px);
  }
  #toggle.on + #menu {
    opacity: 1;
    visibility: visible;
  }
  
  /* menu appearance*/
  #menu {
    position: relative;
    margin-top: 4rem;
    font-family: "Segoe UI", Candara, "Bitstream Vera Sans", "DejaVu Sans", "Bitstream Vera Sans", "Trebuchet MS", Verdana, "Verdana Ref", sans-serif;
    text-align: center;
    border-radius: 4px;
 
    box-shadow: 0 1px 8px rgba(0,0,0,0.05);
    /* just for this demo */
    opacity: 0;
    visibility: hidden;
    transition: opacity .4s;
  }
  #menu:after {
    position: absolute;
    top: -15px;
    left: 95px;
    content: "";
    display: block;
    border-left: 15px solid transparent;
    border-right: 15px solid transparent;
    border-bottom: 20px solid;
  }
  
  /* demo styles */