course-tencent-cloud/public/static/lib/layui/extends/kg-dropdown.css

/*dropdown*/
.kg-dropdown {
    display: inline-block;
    position: relative;
    font-size: 14px;
}

.kg-dropdown > ul {
    position: absolute;
    display: none;
    top: 100%;
    left: 0px;
    padding: 5px 0;
    margin: 5px 0;
    white-space: nowrap;
    line-height: 36px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, .12);
    border: 1px solid #d2d2d2;
    background-color: #fff;
    border-radius: 2px;
    z-index: 900;
}

.kg-dropdown > ul > h4 {
    color: #999;
    display: block;
    padding: 0 20px;
    font-size: 12px;
}

.kg-dropdown > ul > li {
    position: relative;
}

.kg-dropdown > ul > li > a {
    color: #333;
    display: block;
    padding: 0 20px;
    transition: all .3s;
    -webkit-transition: all .3s;
}

.kg-dropdown > ul > li > a > i {
    font-size: 14px;
    margin-right: 5px;
}

.kg-dropdown > ul > li > a:hover {
    background-color: #f2f2f2;
    color: #000;
}

.kg-dropdown.dropdown-right > ul {
    left: auto;
    right: 0px;
}

.kg-dropdown > ul > li.dropdown-item-disabled > a {
    color: #999;
    cursor: not-allowed;
}

.kg-dropdown > ul > li.dropdown-item-disabled > a:hover {
    color: #999;
    background-color: transparent;
}