#8800
ThemeofWP
Keymaster

Hey you’ve used custom css a bit wrong usage please change it by this:

.twp-overlay .twp-olmenu {
margin: 5% auto !important;
overflow: hidden;
}

also

You need to add this for the border:

.twp-overlay .twp-olmenu ul {
margin: 0 5px;
}

.twp-overlay .twp-olmenu ul ul li {
border-bottom: 1px solid #efefef;
}

I hope those will helps to you.