Floated elements (your li in this case) have a height of 0. So, essentially, your ul element is 0 pixels tall.
Adding display: inline-block to your li elements allow for this to be corrected. Therefore, the overflow style for your ul is not required.
ul.navBar {
list-style-type: none;
margin: 0px;
padding:0px;
background-color: #4277f4;
cursor: pointer;
}
li {
display:inline-block;
}
li a {
display: inline-block;
color: white;
text-align: center;
padding: 14px 16px;
font-family: Verdana, Geneva, Tahoma, sans-serif;
font-size: 20px;
text-decoration: none;
}
li:hover {
background-color: #A2AEB3;
}
.dropDownContent {
display: none;
position: absolute;
background-color: #7DC9E3;
width: 150px;
box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
z-index: 1;
text-decoration: none;
}
.dropDownContent a {
color: white;
display: block;
}
.dropDownContent a:hover{
background-color: #4A96B0;
}
li.dropDownBtn:hover .dropDownContent{
display: block;
}
