我需要水平居中嵌入塊的子元素。問題是子子菜單是可變寬度,可以比其父母寬。我最初的解決方案是將子元素設置爲左側&右側-50px,但這不是一個真正的可變寬度,而是靜態設置爲比其父元素寬100px。中心絕對定位的子元素
.main-menu {
text-align: left;
margin: 0;
padding: 0;
font-size: 0px;
font-size: 0rem;
}
.main-menu li {
font-size: 18px;
font-size: 1.8rem;
line-height: 1em;
list-style-type: none;
text-align: center;
display: inline-block;
zoom: 1;
padding: 0 25px;
position: relative;
}
li > a {
display: inline-block;
zoom: 1;
padding: 21px 0 19px;
font-family: "Open Sans", sans-serif;
font-weight: 400;
color: #282828;
font-size: 16px;
font-size: 1.6rem;
line-height: 1.2em;
text-decoration: none;
-webkit-transition: all .25s ease-in-out, background-image 0s, background-position 0s;
transition: all .25s ease-in-out, background-image 0s, background-position 0s;
}
.sub-menu {
position: absolute;
top: 100%;
left: -50px;
right: -50px;
max-width: 250px;
margin-left: auto;
margin-right: auto;
margin-bottom: 0;
min-width: 150px;
background-color: white;
text-align: left;
padding: 17px 0;
box-shadow: 0 2px 5px #dcdcdc inset;
border-top: 18px solid #ffdd00;
}
<ul class="main-menu clearfix"><li id="menu-item-657" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children first menu-item-657">
<li id="menu-item-657" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children first menu-item-657"><a href="link">Solutions</a>
<ul class="sub-menu">
\t <li id="menu-item-220469" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-220469"><a href="link">Solutions</a></li>
\t <li id="menu-item-18009" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-18009"><a href="link">How It Works</a></li>
\t <li id="menu-item-10344" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-10344"><a href="link">Why Use It</a></li>
\t <li id="menu-item-3375" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3375"><a href="link">Products</a></li>
</ul>
</li>
</ul>
'的text-align:center',而不是'left'爲'子menu'爲你的作品? – kukkuz