.logo-ad-wrapper {float:left;
width: 15%;
}
.navigation-wrapper {
       float: left;
    padding-top: 35px;
margin-left:100px;
}
.main_navigation li {
border-bottom:2px solid #fff;
transition:0.3s;
}
.main_navigation .current_page_item,
.main_navigation li:hover {
border-bottom:2px solid black;
transition:0.3s;
}
.main_navigation .current_page_item a {color:black}