display menu as table layout

Editing my answer. See the screenshot, if it’s close enough to what you’re looking for, try adding the following to your stylesheet.

.header_menu_res ul li {
    margin: 0 0 20px;
    width: 25%;
}

.menu-item i._mi, .menu-item img._mi {
    display: block;
    float: left;
}
.menu-item span {
    margin-top: 8px;
    display: block;
    margin-left: 60px;
}