.sort_menu {display: none;
    position: absolute;
    width: 160px;
    left: calc(50% - 80px);
	top: 42px;
    background: #f3f3f3;
    z-index: 1;
    padding: 0px 10px;
    border-radius: 4px;
    box-shadow: 0 1px 5px #c8c8c8;
}
.sort_menu li a {padding: 8px 0;
    text-align: center;
    display: block;
    border-bottom: 1px solid #ccc;
    font-size: 14px;}
li.nav-item:hover>ul.sort_menu {display: block;}
li.nav-item{position: relative;}

@media (max-width: 991px) {
	.sort_menu {display: block; background: #f3f3f300;box-shadow: none; position: relative;    width: 100%;left: 0;top: 20px;}
	.sort_menu li a {padding: 10px 4px;
        border-bottom: none;
        font-size: 20px;
        background: #e9fcd4;}
}