ul {
    white-space: nowrap;
    overflow-x: auto;
    list-style: none;
    padding: 0;
}

ul li {
    margin-left: 0.48rem;
    height: 100px;
    display: inline-block;
    vertical-align: top;
    width: 100px;
    text-align: center;
}

<ul>
        <li>
            <div class="imgContain"></div>
        </li>
        <li>
            <div class="imgContain"></div>
        </li>
        <li>
            <div class="imgContain"></div>
        </li>
        <li>
            <div class="imgContain"></div>
        </li>
    </ul>