我有一个简单的问题。我正在尝试向this page中的子菜单添加淡入效果,但我并不能很好地理解ul li ul
选择器概念,因此它不是正确的。
看起来真的很难,但我做错了,我无法弄明白!!
如何添加此CSS过渡效果?我已经尝试过使用animate.css库,但是库的使用并不是强制性的,我也可以使用一个也没有使用它的解决方案。
.classname li:hover > ul{
display:block;
-moz-animation: fadeInUp .3s ease-in ;
-webkit-animation: fadeInUp .3s ease-in ;
animation:fadeInUp .3s ease-in ;
}
.classname ul li:hover > ul{
display:block;
-moz-animation: fadeInRight .3s ease-in ;
-webkit-animation: fadeInRight .3s ease-in ;
animation:fadeInRight .3s ease-in ;
}
演示:以下是我目前正在尝试编码的代码段。
/* MENU NAVIGATION */
#nav span {
display: none;
}
#nav,
#nav ul {
list-style: none outside none;
margin: 0;
padding: 0;
}
#nav {
font-family: 'Josefin Sans', sans-serif;
float: left;
margin-left: 1%;
margin-right: 1%;
position: relative;
width: 98%;
}
#nav ul.subs {
background-color: #FFFFFF;
box-shadow: 1px 1px 5px rgba(0, 0, 0, 0.2);
color: #333333;
display: none;
left: 0;
padding: 2%;
position: absolute;
top: 54px;
width: 96%;
}
#nav > li {
border-bottom: 5px solid transparent;
float: left;
margin-bottom: -5px;
text-align: left;
-moz-transition: all 300ms ease-in-out 0s;
-ms-transition: all 300ms ease-in-out 0s;
-o-transition: all 300ms ease-in-out 0s;
-webkit-transition: all 300ms ease-in-out 0s;
transition: all 300ms ease-in-out 0s;
}
#nav li a {
display: block;
text-decoration: none;
-moz-transition: color 450ms ease-in-out 0s, background-color 450ms ease-in-out 0s;
-ms-transition: color 450ms ease-in-out 0s, background-color 450ms ease-in-out 0s;
-o-transition: color 450ms ease-in-out 0s, background-color 450ms ease-in-out 0s;
-webkit-transition: color 450ms ease-in-out 0s, background-color 450ms ease-in-out 0s;
transition: color 450ms ease-in-out 0s, background-color 450ms ease-in-out 0s;
white-space: normal;
}
#nav > li > a {
color: #333333;
display: block;
line-height: 49px;
padding: 0 15px;
text-transform: uppercase;
}
#nav > li:hover > a,
#nav > a:hover {
background-color: #F55856;
color: #FFFFFF;
}
#nav li.active > a {
background-color: #333333;
color: #FFFFFF;
}
/* submenu */
#nav li:hover ul.subs {
display: block;
}
#nav ul.subs > li {
display: inline-block;
float: none;
padding: 10px 1%;
vertical-align: top;
width: 33%;
}
#nav ul.subs > li a {
color: #777777;
line-height: 20px;
}
#nav ul li a:hover {
color: #F55856;
}
#nav ul.subs > li > a {
font-size: 1.3em;
margin-bottom: 10px;
text-transform: uppercase;
}
#nav ul.subs > li li {
float: none;
padding-left: 8px;
-moz-transition: padding 150ms ease-out 0s;
-ms-transition: padding 150ms ease-out 0s;
-o-transition: padding 150ms ease-out 0s;
-webkit-transition: padding 150ms ease-out 0s;
transition: padding 150ms ease-out 0s;
}
#nav ul.subs > li li:hover {
padding-left: 15px;
}

<div class="container">
<ul id="nav">
<li><a href="#">Home</a>
</li>
<li><a href="#s1">Prodotti</a>
<span id="s1"></span>
<ul class="subs">
<li><a href="#">Header a</a>
<ul>
<li><a href="#">Submenu x</a>
</li>
<li><a href="#">Submenu y</a>
</li>
<li><a href="#">Submenu z</a>
</li>
</ul>
</li>
<li><a href="#">Header b</a>
<ul>
<li><a href="#">Submenu x</a>
</li>
<li><a href="#">Submenu y</a>
</li>
<li><a href="#">Submenu z</a>
</li>
</ul>
</li>
</ul>
</li>
<li><a href="#">Shop</a>
</li>
<li><a href="#">Area Privata</a>
</li>
<li><a href="#">Contatti</a>
</li>
</ul>
</div>
&#13;
答案 0 :(得分:2)
无需动画或单独的库来实现您所需的效果。这些可以通过使用转换和一些CSS转换来实现。
演示:(以下提供说明)。
/* MENU NAVIGATION */
#nav span {
display: none;
}
#nav,
#nav ul {
list-style: none outside none;
margin: 0;
padding: 0;
}
#nav {
font-family: 'Josefin Sans', sans-serif;
float: left;
margin-left: 1%;
margin-right: 1%;
position: relative;
width: 98%;
}
#nav ul.subs {
background-color: #FFFFFF;
box-shadow: 1px 1px 5px rgba(0, 0, 0, 0.2);
color: #333333;
left: 0;
padding: 2%;
position: absolute;
top: 54px;
width: 96%;
}
#nav > li {
border-bottom: 5px solid transparent;
float: left;
margin-bottom: -5px;
text-align: left;
transition: all 300ms ease-in-out 0s;
}
#nav li a {
display: block;
text-decoration: none;
transition: color 450ms ease-in-out 0s, background-color 450ms ease-in-out 0s;
white-space: normal;
}
#nav > li > a {
color: #333333;
display: block;
line-height: 49px;
padding: 0 15px;
text-transform: uppercase;
}
#nav > li:hover > a,
#nav > a:hover {
background-color: #F55856;
color: #FFFFFF;
}
#nav li.active > a {
background-color: #333333;
color: #FFFFFF;
}
/* submenu */
#nav ul.subs > li {
display: inline-block;
float: none;
padding: 10px 1%;
vertical-align: top;
width: 33%;
}
#nav ul.subs > li a {
color: #777777;
line-height: 20px;
}
#nav ul li a:hover {
color: #F55856;
}
#nav ul.subs > li > a {
font-size: 1.3em;
margin-bottom: 10px;
text-transform: uppercase;
}
#nav ul.subs > li li {
float: none;
padding-left: 8px;
transition: padding 150ms ease-out 0s;
}
#nav ul.subs > li li:hover {
padding-left: 15px;
}
#nav > li > ul {
opacity: 0;
transform: translateY(25%);
transition: all 150ms ease;
pointer-events: none;
}
#nav > li:hover > ul {
opacity: 1;
transform: translateY(0%);
pointer-events: auto;
}
#nav > li > ul > li > ul {
opacity: 0;
transform: translateX(50%);
transition: all 150ms ease;
}
#nav > li > ul > li:hover > ul {
opacity: 1;
transform: translateX(0%);
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/prefixfree/1.0.7/prefixfree.min.js"></script>
<div class="container">
<ul id="nav">
<li><a href="#">Home</a>
</li>
<li><a href="#s1">Prodotti</a>
<span id="s1"></span>
<ul class="subs">
<li><a href="#">Header a</a>
<ul>
<li><a href="#">Submenu x</a>
</li>
<li><a href="#">Submenu y</a>
</li>
<li><a href="#">Submenu z</a>
</li>
</ul>
</li>
<li><a href="#">Header b</a>
<ul>
<li><a href="#">Submenu x</a>
</li>
<li><a href="#">Submenu y</a>
</li>
<li><a href="#">Submenu z</a>
</li>
</ul>
</li>
</ul>
</li>
<li><a href="#">Shop</a>
</li>
<li><a href="#">Area Privata</a>
</li>
<li><a href="#">Contatti</a>
</li>
</ul>
</div>
代码说明:
为了产生与你链接的页面类似的效果(也就是说,第一级子菜单在悬停时进行淡入+上移,第二级子菜单进行淡入+移动留下悬停),需要做以下事情:
display
的{{1}}属性。但是将值更改为ul
属性是不可转换的,因此子菜单将立即出现。只需删除导致此问题的行。display
#nav ul.subs {
background-color: #FFFFFF;
box-shadow: 1px 1px 5px rgba(0, 0, 0, 0.2);
color: #333333;
/*display: none; comment out or remove this line */
left: 0;
padding: 2%;
position: absolute;
top: 54px;
width: 96%;
}
/* remove these */
#nav li:hover ul.subs {
display: block;
}
的初始状态为ul
,并为其添加opacity: 1
。这会将子菜单的容器向下推动其高度的25%。 transform: translateY(25%)
#nav > li > ul{
opacity: 0;
transform: translateY(25%);
transition: all 150ms ease;
pointer-events: none;
}
更改为1并通过设置`transform:translateY(0%)将其转换回原始位置。这使得看起来好像子菜单正在淡入并且同时向上移动。opacity
#nav > li:hover > ul{
opacity: 1;
transform: translateY(0%);
pointer-events: auto;
}
,而是使用translateY
,因为它必须向右移动而不是向下移动。translateX