<div class="nav_wrap">
    <ul class="nav_mine">
        <li class="nav_item">全部</li>
        <li class="nav_item">Adobe</li>
        <li class="nav_item">微軟</li>
        <li class="nav_item">會(huì)計(jì)</li>
        <li class="nav_item">繪畫</li>
        <li class="nav_item">Adobe</li>
        <li class="nav_item">微軟</li>
        <li class="nav_item">會(huì)計(jì)</li>
        <li class="nav_item">繪畫</li>
    </ul>
</div>
<script src="node_modules/jQuery/tmp/jquery.js"></script>

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0
}
.nav_wrap{
    overflow-x: scroll;
}
.nav_mine {
    padding: 15px 10px;
    border-bottom: 1px solid #aca9a7;
    height: 75px;
    overflow-x: scroll;
    overflow-y: hidden;
}

.nav_mine .nav_item {
    border: 1px solid #1a110b;
    border-radius: 40px;
    color: #aca9a7;
    margin-right: 10px;
    font-size: 24px;
    padding: 4px 18px;
    float: left;
    list-style: none;
}

$(function(){
    var width = 0;
    for (let i = 0; i < $('.nav_item').length; i++) {
        width += $('.nav_item').eq(i).outerWidth(true);
    }
    $('.nav_mine').width(width+20);  //width只是內(nèi)容的寬度，需要加上padding的寬度
})

* {
    box-sizing: border-box;
}

.nav_mine {
    padding: 15px 20px;
    border-bottom: 1px solid #aca9a7;
    height: 75px;
    display: flex;
    align-items: center;
    overflow-y: hidden;
    flex-wrap: nowrap;
}

.nav_mine .nav_item {
    border: 1px solid #aca9a7;
    border-radius: 40px;
    color: #aca9a7;
    margin-right: 22px;
    font-size: 24px;
    padding: 4px 18px;
    list-style: none;
    white-space: nowrap;
}