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