html - 如何在悬停时隐藏菜单中的文本并用下划线代替图像？

Question

我想在顶部制作菜单，并在悬停鼠标时隐藏文本和显示图标。并在图标下添加下划线。在我的代码中，我成功地将文本更改为图像，但是如何在图像下添加下划线并使下划线宽度为 3px，长度为 60px？这是我的代码- HTML:

<div class="menu topMenu">
<ul class="topMenuOptions">
    <li><span>111</span></li>
    <li><span>222</span></li>
    <li><span>333</span></li>
</ul>

CSS:

.topMenu {
text-transform: uppercase;
background-image: url('images/1.png');
position: absolute;
height: 88px;
width: 400px;
background: lightcoral;
margin-left: 332px;
padding-top: 30px;
 }

.topMenuOptions {
padding: 0;
margin: 0;
margin-left: 155px;
list-style-type: none;
}

.topMenuOptions li {
    cursor: pointer;
    padding: 10px;
    color: white;
    font-size: 14px;
    display: inline;
}

    .topMenuOptions li:hover:nth-child(1) {
        background: url('images/2.png') center center no-repeat;
        background-position: 20px 0;
        background-size: contain;
        color:transparent;
    }

    .topMenuOptions li:hover:nth-child(2) {
        background: url('images/3.png') center center no-repeat;
        background-size: contain;
        background-position: 20px 0;
        color: transparent;
    }

      .topMenuOptions li:hover:nth-child(3) {
        background: url('images/4.png') center center no-repeat;
        background-size: contain;
        background-position: 20px 0;
        color: transparent;
    }

Answer 1

使用border-bottom: 3px solid white;，例如:

.topMenuOptions li:hover:nth-child(1) {
    background: url('images/2.png') center center no-repeat;
    background-position: 20px 0;
    background-size: contain;
    color:transparent;
    border-bottom: 3px solid #fff;
}