css修改导航条的样式或移动端加导航条

.container {
    position: absolute;
    left: 60px;
    top: 90px;
    width: calc(100% - 120px);
    height: 254px;
    line-height: 40px;
    font-size: 24px;
    color: #884022;
    text-align: left;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    &::-webkit-scrollbar-track-piece {
        background-color: #e0cebd;
    }
    &::-webkit-scrollbar {
        width: 10px;
        height: 13px;
        -webkit-border-radius: 10px;
        -moz-border-radius: 10px;
        border-radius: 10px;
    }
    &::-webkit-scrollbar-thumb {
        background-color: #ceb8a3;
        background-clip: padding-box;
        -webkit-border-radius: 10px;
        -moz-border-radius: 10px;
        border-radius: 10px;
        min-height: 28px;
    }
    &::-webkit-scrollbar-thumb:hover {
        background-color: #ceb8a3;
        -webkit-border-radius: 10px;
        -moz-border-radius: 10px;
        border-radius: 10px;
    }
}