css 导航栏

<ul>

<li><a href="a.html">helllo</a></li>
<li><a href="a.html">helllo</a></li>
<li><a href="a.html">helllo</a></li>


</ul>ul{list-style-type: none;

padding: 0px;
background-color: red;
text-align: center;
width: 400px;
}
/*a:link,a:visited{*/
/* font-weight: bold;*/
/* 去掉下划线*/
 text-decoration: none;
 display: block;
/* background-color: burlywood;*/
 color: yellow;

}
/*
a:active,a:hover{
background-color: orange;
}
*/