css3实例教程⼀款纯css3实现的环形导航菜单
  之前为⼤家介绍了好⼏款导航菜单，今天要给⼤家带来⼀款纯css3实现的环形导航菜单。该导航⽐较新鲜，列表图标位于中间，单击列表图标的时候，各项分布于列表图表的四周。形成⼀个环形。效果图如下：
  实现的代码。
  html代码：
复制代码
代码如下:
<div class="container">
<h1>
Cool Open/Close menu in full CSS</h1>
<input type="checkbox" id="menu_opener_id" class="menu_opener">
<label for="menu_opener_id" class="menu_opener_label">
</label>
<div class="barre_hamburger">
</div>
<a href="#" class="link_one link_general"></a><a href="#" class="link_two link_general">
</a><a href="#" class="link_three link_general"></a><a href="#" class="link_four link_general">
</a></input>
</div>
  css代码：
[code]body
{
background: #34495e;
}
.container
{
width: 550px;
display: block;
margin: auto;
position: relative;
}
h1
{
text-align: center;
font-family: 'Roboto' , sans-serif;
font-weight: 400;
color: #f1c40f;
}
.menu_opener
{
display: none;
}
.menu_opener:checked ~ .link_one
{
top: 65px;
}
.menu_opener:checked ~ .link_two
{
left: 385px;
}
.menu_opener:checked ~ .link_three
{
top: 385px;
}
.menu_opener:checked ~ .link_four
{
left: 65px;
}
.menu_opener:checked ~ .barre_hamburger
{
opacity: 0;
}
.menu_opener:checked ~ .menu_opener_label:after        {
transform: rotate(45deg);
top: 70px;
}
.
menu_opener:checked ~ .menu_opener_label:before        {
transform: rotate(-45deg);
top: 70px;
}
.menu_opener_label
{
background: #f1c40f;
width: 150px;
height: 150px;
display: block;
导航菜单
cursor: pointer;
border-radius: 50%;
position: absolute;
top: 200px;
left: 200px;
z-index: 10;
}
.menu_opener_label:after
{
position: absolute;
top: 50px;
left: 50px;
background: #000;
content: "";
width: 50px;
height: 10px;
-webkit-transition: all 0.4s ease;
transition: all 0.4s ease;
}
.menu_opener_label:before
{
position: absolute;
top: 90px;
left: 50px;
background: #000;
content: "";
width: 50px;
height: 10px;
-webkit-transition: all 0.4s ease;
transition: all 0.4s ease;
}
.barre_hamburger
{
width: 50px;
height: 10px;
position: absolute;
top: 270px;
left: 250px;
background: #000;
z-index: 20;
-webkit-transition: all 0.4s ease;
transition: all 0.4s ease;
}
.link_general
{
width: 100px;
height: 100px;
display: block;
border-radius: 50%;
position: absolute;
top: 225px;
left: 225px;
background: #ecf0f1;
-webkit-transition: all 0.4s ease;
transition: all 0.4s ease;
}
.
link_one
{
background: url("home.png") #f1c40f no-repeat center center;        }
.link_two
{
background: url("mail.png") #f1c40f no-repeat center center;        }
.link_three
{
background: url("set.png") #f1c40f no-repeat center center;        }
.link_four
{
background: url("start.png") #f1c40f no-repeat center center;        }  [code]

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