Hi,
You can change default style for submenu by add custom css in Claue > Theme Option > General Layout > Custom CSS
.sub-column-item .sub-column {
position: absolute;
min-width: 250px;
display: table;
background: rgba(216,216,216,0.95);
top: 120%;
opacity: 0;
visibility: hidden;
left: 250px;
transition: all .3s;
text-align: left;
z-index: 10;
padding: 0;
box-shadow: 0 0 3px 0 rgba(0,0,0,.1);
}
.jas-menu > li > ul > .sub-column-item {
display: inherit;
}
.jas-menu ul .sub-column-item > a {
color: #878787;
text-transform: none;
font-weight: 400;
font-size: 12px;
padding: 0;
border-bottom: none;
min-width: 250px;
}
.sub-column-item .sub-column li {
padding: 10px 15px;
line-height: 30px;
}
Best regards
Harry
Premium Wordpress themes and plugins, Best WooCommerce theme https://themeforest.net/user/janstudio/portfolio?ref=janstudio