[Minnoe Blue]

Here’s how others fix this issue: add this class to your css:
#headernav li a.hasdropdown:after {
content: ” “;
width: 0px;
height: 0px;
border-style: solid;
border-width: 7px 6px 0 6px;
border-color: #000000 transparent transparent transparent;
position:absolute;
left: 90px;
top: 24px;
}
Or you can easily get this feature by using a theme like me. Bother allow you to get the Dropdown Menu