.tab {
    position: fixed;
    width: 100%;
    left: 50%;
    transform: translateX(-50%);
    bottom: .2083rem/* 40/192 */
    ;
    padding: 0 .2604rem/* 50/192 */
    ;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    resize: none;
    cursor: pointer;
    box-sizing: border-box;
}

.tab a .item {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin-right: .2604rem/* 50/192 */
    ;
}

.tab a:last-child .item {
    margin-right: 0;
}

.tab .tab-icon {
    width: .5429rem/* 110/192 */
    ;
    height: .4852rem/* 97/192 */
    ;
    margin-bottom: .0313rem/* 6/192 */
    ;
}

.tab .tab-title {
    font-size: .1463rem/* 30/192 */
    ;
    font-family: Microsoft YaHei;
    font-weight: 400;
    color: #dc311b;
}