navbar.css

header {
      width: 100%;
      top: 0;
      left: 0;
      position: fixed;
      z-index: 10;
}
 
nav {
      position: fixed;
      width: 100%;
      background-color: var(--background-navbar);
}
 
nav ul {
      list-style: none;
      background: rgba(0, 0, 0, 0);
      overflow: hidden;
      color: var(--white-text-color);
      padding: 0;
      text-align: left;
      margin: 0;
      transition: 1s;
}


 
nav ul li {
      display: inline-block;
      padding: 16px 20px;
}
 
nav ul li a {
      text-decoration: none;
      color: var(--white-text-color);
      font-size: 175%;
      transition: all 0.1s ease 0.1s;
}

/* Hovering over links changes color */
nav ul li a:hover {
    color: var(--highlight-color);
}
 
.menu-icon {
      line-height: 60px;
      width: 100%;
      background: var(--background-navbar);
      text-align: right;
      box-sizing: border-box;
      padding: 15px 24px;
      cursor: pointer;
      color: var(--white-text-color);
      display: none;
}
 
@media(max-width: 786px) {
 
      .logo {
            position: fixed;
            top: 0;
            margin-top: 16px;
      }
 
      nav ul {
            max-height: 0px;
            background: #282828; /* color of hamburger popup panel */
      }
 
      nav.black ul {
            background: #222;
      }
 
      .showing {
            max-height: 34em;
      }
 
      nav ul li {
            box-sizing: border-box;
            width: 100%;
            padding: 24px;
            text-align: center;
      }
 
      .menu-icon {
            display: block;
      }
 
}