Responsive Drop Down Menu Bar Using HTML & CSS

Responsive Navigation Drop Down Menu Bar [ SOURCE CODE ]

First, create an HTML file with the name of index.html and paste the given codes in your HTML file. Remember, you’ve to create a file with .html extension.

<meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" />
    <link rel="stylesheet" type="text/css" href="style.css" />
    <title>Responsive Drop Down Menu Bar</title>
 
     <nav>
       <div class="logo">SHIFT DMP</div>

       <label for="btn" class="icon">
         <span class="fa fa-bars"></span>
       </label>

       <input type="checkbox" id="btn" />

       <ul>
         <li><a href="#">Home</a></li>

         <li>
           <label for="btn-1" class="show">Features+</label>
           <a href="#">Features</a>
           <input type="checkbox" id="btn-1" />
           <ul>
             <li><a href="#">Feature 1</a></li>
             <li><a href="#">Feature 2</a></li>
             <li><a href="#">Feature 3</a></li>
           </ul>
           </li>

           <li>
             <label for="btn-2" class="show">Services+
             </label>
             <a href="#">Services</a>
             <input type="checkbox" id="btn-2" />
             <ul>
               <li><a href="#">Service 1</a></li>
               <li><a href="#">Service 2</a></li>
               <li>
                 <label for="btn-3" class="show">More+
                 </label>
                 <a href="#">More <span class="fa fa-plus"></span></a>
                 <input type="checkbox" id="btn-3" />
                 <ul>
                  <li><a href="#">Submenu 1</a></li>
                  <li><a href="#">Submenu 2</a></li>
                  <li><a href="#">Submenu 3</a></li>
                 </ul>
               </li>
             </ul>
           </li>

           <li><a href="#">Blog</a></li>
           <li><a href="#">Contact</a></li>
       </ul>
     </nav>

Second, create a CSS file with the name of style.css and paste the given codes in your CSS file. Remember, you’ve to create a file with .css extension.

@import url('https://fonts.googleapis.com/css?family=Poppins:400,500,600,700&display=swap');
*{
  margin: 0;
  padding: 0;
  user-select: none;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}
body{
  background: #f2f2f2;
}
nav{
  background: #222;
}
nav:after{
  content: '';
  clear: both;
  display: table;
}
nav .logo{
  float: left;
  color: white;
  text-transform: uppercase;
  font-size: 25px;
  font-weight: 600;
  line-height: 70px;
  padding-left: 60px;
}
nav ul{
  float: right;
  margin-right: 40px;
  list-style: none;
  position: relative;
}
nav ul li {
  float: left;
  display: inline-block;
  background: #222;
  margin: 0 5px;
}
nav ul li a{
  color: white;
  line-height: 70px;
  text-decoration: none;
  font-size: 18px;
  padding: 8px 15px;
  text-transform: uppercase;
  font-weight: 600;
}
nav ul li a:hover{
  color: crimson;
}
nav ul ul{
  position: absolute;
  top: 90px;
  opacity: 0;
  visibility: hidden;
  transition: top .3s;
}
nav ul li:hover > ul{
  top: 70px;
  opacity: 1;
  visibility: visible;
}
nav ul ul li{
  position: relative;
  margin: 0px;
  width: 150px;
  float: none;
  display: list-item;
  border-bottom: 1px solid rgba(0,0,0,0.3);
}
nav ul ul li a{
  line-height: 50px;
}
nav ul ul ul li{
  position: relative;
  top: -60px;
  left: 150px;
}
.show,.icon,input{
  display: none;
}
.fa-plus{
  font-size: 15px;
  margin-left: 40px;
}
@media all and (max-width: 968px) {
  nav ul{
    margin-right: 0px;
    float: left;
  }
  nav .logo{
    padding-left: 30px;
    width: 100%;
  }
  .show + a, ul{
    display: none;
  }
  nav ul li,nav ul ul li{
    display: block;
    width: 100%;
  }
  .show{
    display: block;
    color: white;
    font-size: 18px;
    text-transform: uppercase;
    padding: 0 20px;
    line-height: 70px;
    font-weight: 600;
    cursor: pointer;
  }
  .show:hover{
    color: crimson;
  }
  .icon{
    display: block;
    color: white;
    position: absolute;
    top: 0;
    right: 40px;
    line-height: 70px;
    cursor: pointer;
    font-size: 25px;
  }
  nav ul ul{
    top: 70px;
    border-top: 0px;
    float: none;
    position: static;
    display: none;
    opacity: 1;
    visibility: visible;
  }
  nav ul ul a{
    padding-left: 40px;
  }
  nav ul ul ul a{
    padding-left: 80px;
  }
  nav ul ul ul li{
    position: static;
  }
  [id^=btn]:checked + ul{
    display: block;
  }
  nav ul ul li{
    border-bottom: 0px;
  }
}

See the Pen Responsive Navigation Drop Down Menu Bar by SHIFT DMP (@shiftdmp) on CodePen.