Reply To: Re-customize Header Hover

Hello,

Ok, try to replace CSS styles for these selectors with the following snippet

.main-nav .menu > li > a:before, 
.main-nav .menu > li.menu-item-design-default ul li a:before {
    content: "";
    position: absolute;
    top: 75%;
    left: 13px;
    right: 13px;
    height: 2px;
    background: black;
    opacity: 0;
    visibility: hidden;
    -webkit-transition: all 0.2s ease;
    transition: all 0.2s ease;
}

Regards