1
我想在我的導航菜單中創建子菜單。我對css知之甚少。 但面臨一些問題。 當我在菜單中添加子菜單。菜單顯示爲ul li，直接盟友。在導航菜單中創建子菜單
#cssmenu {
background: #88BC18;
width: auto;
z-index: 1;
position: relative;
}
#cssmenu ul {
list-style: none;
margin: 0;
padding: 0;
line-height: 1;
display: block;
zoom: 1;
}
#cssmenu ul:after {
content: " ";
display: block;
font-size: 0;
height: 0;
clear: both;
visibility: hidden;
}
#cssmenu ul li {
display: inline-block;
padding: 0;
margin: 0;
}
#cssmenu.align-right ul li {
float: right;
}
#cssmenu.align-center ul {
text-align: center;
}
#cssmenu ul li a {
color: #ffffff;
text-decoration: none;
display: block;
padding: 15px 25px;
font-family: 'Open Sans', sans-serif;
font-weight: 700;
text-transform: uppercase;
font-size: 14px;
position: relative;
-webkit-transition: color .25s;
-moz-transition: color .25s;
-ms-transition: color 25s;
-o-transition: color .25s;
transition: color .25s;
}
#cssmenu ul li a:hover {
color: #004900;
}
#cssmenu ul li a:hover:before {
width: 100%;
}
#cssmenu ul li a:before {
content: "";
display: block;
position: absolute;
left: 0;
bottom: 0;
height: 3px;
width: 0;
background: #004900;
-webkit-transition: width .25s;
-moz-transition: width .25s;
-ms-transition: width 25s;
-o-transition: width .25s;
transition: width .25s;
}
#cssmenu ul li a:after {
content: "";
display: block;
position: absolute;
right: -3px;
top: 19px;
height: 6px;
width: 6px;
background: #ffffff;
opacity: .5;
}
#cssmenu ul li.last>a:after,
#cssmenu ul li:last-child>a:after {
display: none;
}
#cssmenu ul li.active a {
color: #004900;
}
#cssmenu ul li.active a:before {
width: 100%;
}
#cssmenu.align-right li.last>a:after,
#cssmenu.align-right li:last-child>a:after {
display: block;
}
#cssmenu.align-right li:first-child a:after {
display: none;
}<div id="navWrap">
<nav class="nav">
<div id="cssmenu" class="centered">
<ul>
<li class='first'><a href="#welcome" class="smoothScroll"><span>Home</span></a></li>
<li><a href="#portfolio" class="smoothScroll"><span>Features</span></a></li>
<li><a href="#services" class="smoothScroll"><span>About</span></a></li>
<li><a href="#prices" class="smoothScroll"><span>Prices</span></a></li>
<li><a href="faq.html" class="smoothScroll"><span>F.A.Q</span></a></li>
<li><a href="how-to-uses.html" class="smoothScroll"><span>How to Use</span></a></li>
<li><a href="#contact" class="smoothScroll"><span>Contact</span></a></li>
<li><a href="#" class="smoothScroll"><span>Log In</span></a></li>
<li class="last"><a href="#" class="smoothScroll"><span>Help</span></a></li>
</ul>
</div>
</nav>
</div>
只是一個提示：而使用類你的CSS選擇器，'id's應儘可能避免，他們在 - 當用作選擇器時主要是因爲它們的特殊性;它們基本上超過了內聯樣式以外的所有內容，或使用'！important'聲明的樣式規則。 – UncaughtTypeError