      	height: 100px;
      }

      .circle button:focus {
      	outline: none;
      }

      .circle button#open {
      	left: 60%;
      }

      .circle button#close {
      	top: 60%;
      	transform: rotate(90deg);
      	transform-origin: top left;
      }

      nav {
      	color: #fff;
      	position: fixed;
      	bottom: 40px;
      	left: 0;
      	z-index: 100;
      }

      nav ul {
      	list-style-type: none;
      	padding-left: 30px;
      }

      nav