.dropdown {<br /><br>            background-color: #f2f2f2;<br /><br>            border: none;<br /><br>            color: #555;<br /><br>            cursor: pointer;<br /><br>            padding: 18px;<br /><br>            width: 100%;<br /><br>            text-align: left;<br /><br>            outline: none;<br /><br>            font-size: 15px;<br /><br>            transition: background-color 0.4s;<br /><br>        }</p><br><p>        .dropdown:hover {<br /><br>            background-color: #ddd;<br /><br>        }</p><br><p>        .dropdown-content {<br /><br>            display: none;<br /><br>            padding: 0 18px;<br /><br>            background-color: #f9f9f9;<br /><br>            overflow: hidden;<br /><br>            font-size: 15px;<br /><br>        }</p><br><p>        .dropdown:hover .dropdown-content {<br /><br>            display: block;<br /><br>        }