我从下面的代码开始:
#square {
position: fixed;
width: 350px;
height: 100%;
top: 0px;
left: 0px;
background-color: rgb(230, 255, 230);
}
ul {
position: relative;
bottom: 30px;
display: flex;
flex-direction: column;
align-items: center;
list-style-type: none;
padding-left: 0;
}
li {
margin-top: 40px;
text-align: center;
}
.navlink {
text-decoration: none;
color: white;
border-color: white;
border-width: 2px;
border-style: solid;
padding: 5px 20px 5px 20px;
background-color: green;
border-radius: 10px;
}
a:hover {
background-color: #66DE66;
}
<div id = "square">
<ul>
<li><a class = "navlink" href = "#">Introduction</a></li>
<li><a class = "navlink" href = "#">Middle</a></li>
<li><a class = "navlink" href = "#">End</a></li>
</ul>
</div>
我需要li
元素(简介、中间和结尾(的宽度相同,同时保持居中,同时保持锚href
功能和完整的悬停功能。我尝试更改li
元素和类.navlink
宽度无济于事。我也尝试在li
而不是.navlink
下定义绿色矩形元素,但这只会带来新的问题。
怀疑我为.navlink
类定义的填充可能会出现问题,但我不确定如何。
的问题 列弹性框没有定义的高度及其堆叠到弹性项目的自动高度(请参阅删除li
上的margin-top
和ul
上的相对平移后(:
#square {
position: fixed;
width: 350px;
height: 100%;
top: 0px;
left: 0px;
background-color: rgb(230, 255, 230);
}
ul {
/*position: relative;
bottom: 30px;*/
display: flex;
flex-direction: column;
align-items: center;
list-style-type: none;
padding-left: 0;
}
li {
/*margin-top: 40px;*/
text-align: center;
}
.navlink {
text-decoration: none;
color: white;
border-color: white;
border-width: 2px;
border-style: solid;
padding: 5px 20px 5px 20px;
background-color: green;
border-radius: 10px;
}
a:hover {
background-color: #66DE66;
}
<div id = "square">
<ul>
<li><a class = "navlink" href = "#">Introduction</a></li>
<li><a class = "navlink" href = "#">Middle</a></li>
<li><a class = "navlink" href = "#">End</a></li>
</ul>
</div>
现在,您可以看到,当navlink
锚元素通过添加块元素时,li
占用了尽可能多的空间display: block
:
#square {
position: fixed;
width: 350px;
height: 100%;
top: 0px;
left: 0px;
background-color: rgb(230, 255, 230);
}
ul {
/*position: relative;
bottom: 30px;*/
display: flex;
flex-direction: column;
align-items: center;
list-style-type: none;
padding-left: 0;
}
li {
/*margin-top: 40px;*/
text-align: center;
}
.navlink {
text-decoration: none;
color: white;
border-color: white;
border-width: 2px;
border-style: solid;
padding: 5px 20px 5px 20px;
background-color: green;
border-radius: 10px;
display: block; /* added */
}
a:hover {
background-color: #66DE66;
}
<div id = "square">
<ul>
<li><a class = "navlink" href = "#">Introduction</a></li>
<li><a class = "navlink" href = "#">Middle</a></li>
<li><a class = "navlink" href = "#">End</a></li>
</ul>
</div>
现在,您可以制作ul
和inline-flex
元素,以便仅占用所需的空间并删除align-items: center
。此外,通过将其也设置为弹性框并使用justify-content: center
来水平居中square
。调整li
之间的margin
,然后就可以了:
#square {
position: fixed;
width: 350px;
height: 100%;
top: 0px;
left: 0px;
background-color: rgb(230, 255, 230);
display: flex; /* made this a flexbox */
justify-content: center; /* align horizontally */
}
ul {
/*position: relative;
bottom: 30px;*/
display: inline-flex; /* changed to inline flex */
flex-direction: column;
/*align-items: center;*/
list-style-type: none;
padding-left: 0;
}
li {
margin-top: 10px; /* changed */
text-align: center;
}
.navlink {
text-decoration: none;
color: white;
border-color: white;
border-width: 2px;
border-style: solid;
padding: 5px 20px 5px 20px;
background-color: green;
border-radius: 10px;
display: block; /* added */
}
a:hover {
background-color: #66DE66;
}
<div id="square">
<ul>
<li><a class="navlink" href="#">Introduction</a></li>
<li><a class="navlink" href="#">Middle</a></li>
<li><a class="navlink" href="#">End</a></li>
</ul>
</div>