Hamburger Menu Hamburger Icon Styles

#hamburger-icon {
  display: none;
  float: left;
  width: 100%;
  height: 50px;
  margin: 0 0 20px 0;
  padding: 0 20px;
  line-height: 50px;
  background: #cccccc;
  cursor: pointer;
  position: fixed;
  z-index: 10;
  @include box-sizing(border-box);
  @include transition-property(left);
  @include transition-duration(0.25s);
  @include transition-timing-function(ease-in); 
  @include transition-delay(0);
  @media (max-width: 767px) {
    display: block;
  }
}