crucialnet/testing/responsive_navbar/style.css

body {
     margin: 0;
     padding: 0;
     font-family: sans-serif;
}

nav {
     width: 100%;
     background: #f7cad5;
}

ul {
     width: 80%;
     margin: 0 auto;
     padding: 0;
}

ul li {
     list-style: none;
     display: inline-block;
     padding: 20px;
     color: #fff;
     transition: background 2s, color 2s;
}

ul li:hover {
     background: #fff;
     color: #000;
}

ul li a {
     color: inherit;
     text-decoration: none;
     letter-spacing: 1px;
     text-transform: uppercase;
}

.toggle {
     width: 100%;
     padding: 10px 20px;
     background: #f7cad5;
     text-align: right;
     box-sizing: border-box;
     color: #fff;
     font-size: 30px;
     display: none;
}

@media (max-width: 1250px) {
     .toggle {
          display: block;
     }
     
     ul {
          width: 100%;
          display: none;
     }
     
     ul li {
          display: block;
          text-align: right;
     }
     
     .active {
          display: block;
     }
}