.logo {
      line-height: 60px;
      position: fixed;
      float: left;
      margin: 16px 46px;
      color: #fff;
      font-weight: bold;
      font-size: 20px;
      letter-spacing: 2px;
}

nav {
      position: fixed;
      width: 100%;
      line-height: 70px;
      max-height:70px;
      background-colour: transparent;
}

.menu-icon {
      line-height: 60px;
      width: 100%;
      background: #000;
      text-align: right;
      box-sizing: border-box;
      padding: 15px 24px;
      cursor: pointer;
      color: #fff;
      display: none;
}

@media(max-width: 786px) {

      .logo {
            position: fixed;
            top: 0;
            margin-top: 16px;
      }

       nav {
        padding:10vh 1vh !important;
      }
      nav ul {
            max-height: 0px;
            background: #000;
      }

      nav.black ul {
            background: #000;
      }

      .showing {
            max-height: 34em;
      }

      nav ul li {
            box-sizing: border-box;
            width: 100%;
            padding: 24px;
            text-align: center;
      }

      .menu-icon {
            display: block;
      }
}