.pl-submenu{
    /*position: fixed;*/
    z-index: 999;
    margin: 0;
    list-style: none;
    justify-content: space-evenly;
    width: 100%;
    padding: 0;
    clear: both;
    float: left;
    align-items: center;
    display: none;
    flex-wrap: wrap;
}
.pl-submenu li a{
    display: block;
    height: 45px;
    line-height: 45px;
}

@media screen and (max-width: 991px){
    .pl-submenu{
        display: flex;
    }
    .header.row:after{
        content:'';
        height: 45px;
        width: 100%;
        position: relative;
        display: block;
    }
    .header.row.has-pl-submenu:after{
        height: 0;
    }
}