<!doctype html>
<style>
.dropbtn {
background-color: pale blue;
color: blue;
padding: 16px;
font-size: 16px;
border: none;
cursor: pointer;
}
.dropdown {
position: relative;
display: inline-block;
}
.dropdown-content {
display: none;
position: absolute;
background-color: white;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
z-index: 1;
}
.dropdown-content a {
color: blue;
padding: 12px 16px;
text-decoration: none;
display: block;
}
.dropdown-content a:hover {background-color: #f1f1f1}
.dropdown:hover .dropdown-content {
display: block;
}
.dropdown:hover .dropbtn {
background-color: pale blue;
}
</style>
<div class="dropdown">
<button class="dropbtn">Home</button>
<div class="dropdown-content">
<a href="#">Home</a>
</div>
</div>
<li><a href="#">2nd ECE</a>
<ul>
<a href="#">Sub Menu 1</a>
<li><a href="#">Sub Menu 2</a></li>
<li><a href="#">Sub Menu 3</a></li>
<li><a href="#">Sub Menu 4</a>
<ul>
<li><a href="#">Deep Menu 1</a>
<ul>
<li><a href="#">Sub Deep 1</a></li>
<li><a href="#">Sub Deep 2</a></li>
<li><a href="#">Sub Deep 3</a></li>
<li><a href="#">Sub Deep 4</a></li>
</ul>
</li>
<li><a href="#">Deep Menu 2</a></li>
</ul>
</li>
<li><a href="#">Sub Menu 5</a></li>
</ul>
</!doctype>
<style>
.dropbtn {
background-color: pale blue;
color: blue;
padding: 16px;
font-size: 16px;
border: none;
cursor: pointer;
}
.dropdown {
position: relative;
display: inline-block;
}
.dropdown-content {
display: none;
position: absolute;
background-color: white;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
z-index: 1;
}
.dropdown-content a {
color: blue;
padding: 12px 16px;
text-decoration: none;
display: block;
}
.dropdown-content a:hover {background-color: #f1f1f1}
.dropdown:hover .dropdown-content {
display: block;
}
.dropdown:hover .dropbtn {
background-color: pale blue;
}
</style>
<div class="dropdown">
<button class="dropbtn">Home</button>
<div class="dropdown-content">
<a href="#">Home</a>
</div>
</div>
<li><a href="#">2nd ECE</a>
<ul>
<a href="#">Sub Menu 1</a>
<li><a href="#">Sub Menu 2</a></li>
<li><a href="#">Sub Menu 3</a></li>
<li><a href="#">Sub Menu 4</a>
<ul>
<li><a href="#">Deep Menu 1</a>
<ul>
<li><a href="#">Sub Deep 1</a></li>
<li><a href="#">Sub Deep 2</a></li>
<li><a href="#">Sub Deep 3</a></li>
<li><a href="#">Sub Deep 4</a></li>
</ul>
</li>
<li><a href="#">Deep Menu 2</a></li>
</ul>
</li>
<li><a href="#">Sub Menu 5</a></li>
</ul>
</!doctype>