廢話不多說了，直接大家貼代碼了，具體代碼如下所示；
*{
margin: 0;
padding: 0;
}
ul,li{
list-style: none;
}
.ui-slide-box{
width: 300px;
}
.ui-slide-item{
width: 100%;
position: relative;
}
.ui-slide-item-text{
display: block;
background-color: #000000;
color: white;
border-bottom: 1px solid yellow;
height: 40px;
line-height: 40px;
}
.ui-slide-item .ui-slide-box{
display: none;
position: absolute;
left: 300px;
top: 0;
}
.ui-slide-item:hover > .ui-slide-box{
display: block;
}
<ul class="ui-slide-box">
<li class="ui-slide-item">
<span class="ui-slide-item-text">aaaaaaaaaaaaa</span>
<ul class="ui-slide-box">
<li class="ui-slide-item">
<span class="ui-slide-item-text">aaaaaaaaaaaa</span>
<ul class="ui-slide-box">
<li class="ui-slide-item">
<span class="ui-slide-item-text">dddddddd </span>
</li>
<li class="ui-slide-item">
<span class="ui-slide-item-text">sssssssssssss</span>
</li>
<li class="ui-slide-item">
<span class="ui-slide-item-text">eeeeeeeeeeee</span>
</li>
<li class="ui-slide-item">
<span class="ui-slide-item-text">ccccccccccccc</span>
<ul class="ui-slide-box">
<li class="ui-slide-item">
<span class="ui-slide-item-text">aaaaaaaaaaaaa</span>
<ul class="ui-slide-box">
<li class="ui-slide-item">
<span class="ui-slide-item-text">aaaaaaaaaaaa</span>
<ul class="ui-slide-box">
<li class="ui-slide-item">
<span class="ui-slide-item-text">dddddddd </span>
</li>
<li class="ui-slide-item">
<span class="ui-slide-item-text">sssssssssssss</span>
</li>
<li class="ui-slide-item">
<span class="ui-slide-item-text">eeeeeeeeeeee</span>
</li>
<li class="ui-slide-item">
<span class="ui-slide-item-text">ccccccccccccc</span>
</li>
</ul>
</li>
<li class="ui-slide-item">
<span class="ui-slide-item-text">bbbbbbbbbb</span>
<ul class="ui-slide-box">
<li class="ui-slide-item">
<span class="ui-slide-item-text">sfsdfsdfsd </span>
</li>
<li class="ui-slide-item">
<span class="ui-slide-item-text">cvwdfsd</span>
</li>
<li class="ui-slide-item">
<span class="ui-slide-item-text">ewewewe</span>
</li>
<li class="ui-slide-item">
<span class="ui-slide-item-text">xxcxc</span>
</li>
</ul>
</li>
</ul>
</li>
</ul>
</li>
</ul>
</li>
<li class="ui-slide-item">
<span class="ui-slide-item-text">bbbbbbbbbb</span>
<ul class="ui-slide-box">
<li class="ui-slide-item">
<span class="ui-slide-item-text">sfsdfsdfsd </span>
</li>
<li class="ui-slide-item">
<span class="ui-slide-item-text">cvwdfsd</span>
</li>
<li class="ui-slide-item">
<span class="ui-slide-item-text">ewewewe</span>
</li>
<li class="ui-slide-item">
<span class="ui-slide-item-text">xxcxc</span>
</li>
</ul>
</li>
</ul>
</li>
<li class="ui-slide-item">
<span class="ui-slide-item-text">bbbbbbbbbbb</span>
<ul class="ui-slide-box">
<li class="ui-slide-item">
<span class="ui-slide-item-text">aaaaaaaaaaaa</span>
<ul class="ui-slide-box">
<li class="ui-slide-item">
<span class="ui-slide-item-text">dddddddd </span>
</li>
<li class="ui-slide-item">
<span class="ui-slide-item-text">sssssssssssss</span>
</li>
<li class="ui-slide-item">
<span class="ui-slide-item-text">eeeeeeeeeeee</span>
</li>
<li class="ui-slide-item">
<span class="ui-slide-item-text">ccccccccccccc</span>
</li>
</ul>
</li>
</ul>
</li>
<li class="ui-slide-item">
<span class="ui-slide-item-text">cccccccccccccccccc</span>
<ul class="ui-slide-box">
<li class="ui-slide-item">
<span class="ui-slide-item-text">rrrrrrrrrrrrrrrrrrrrrrrrrr</span>
<ul class="ui-slide-box">
<li class="ui-slide-item">
<span class="ui-slide-item-text">dddddddd </span>
</li>
<li class="ui-slide-item">
<span class="ui-slide-item-text">sssssssssssss</span>
</li>
<li class="ui-slide-item">
<span class="ui-slide-item-text">eeeeeeeeeeee</span>
</li>
<li class="ui-slide-item">
<span class="ui-slide-item-text">ccccccccccccc</span>
</li>
</ul>
</li>
</ul>
</li>
</ul>
總結
【網站聲明】本站除付費源碼經過測試外，其他素材未做測試，不保證完整性，網站上部分源碼僅限學習交流，請勿用于商業用途。如損害你的權益請聯系客服QQ：2655101040 給予處理，謝謝支持。