方法一：flex

父{
    width:xxx;
    displaty: flex;
    flex-wrap: nowrap;
    overflow: scroll;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    -moz-overflow-scrolling: touch;
}

子{
    flex: 1 0 auto;
}

方法二：inline

父{
    width:xxx;
    displaty: inline;
    white-space: nowrap;
    overflow: scroll;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    -moz-overflow-scrolling: touch;
}

子{
    display: inline-block;
}