.row{
    display: flex;
}

.col1{
    flex: 1;
    width: 0;
    padding: 5px;
}

.col2{
    padding: 5px;
    width: 0;
    flex: 2;
}

.col3{
    padding: 5px;
    width: 0;
    flex: 3;
}

.col4{
    padding: 5px;
    width: 0;
    flex: 4;
}

.col5{
    padding: 5px;
    width: 0;
    flex: 5;
}

.height50 {
    height: 50%;
}

.bottom {
    position: absolute;
    bottom: 0;
    text-align: center;
    width: 100%;
    min-width: 1300px;
    border-bottom: 3px solid #4beefd;
    font-size: 0;
}

.bottom .item {
    color: #eee;
    margin-left: -4em;
    display: inline-block;
    width: 15em;
    height: 1.6em;
    cursor: pointer;
    font-size: 0.4rem;
    line-height: 1.6em;
    background-repeat: no-repeat;
    text-decoration:none;
    background-size: 100% 100%;
    background-image: url("../../assets/img/bottom_item.png");
}
.bottom .act {
    background-image: url("../../assets/img/bottom_select.png");
}