CSS 文件
/* ＊通配符 对所有的标签进行设置*/
*{
margin: 0px;
padding: 0px;
}
.top{
width: 100%;
height: 50px;
background-color: black;
}
.top_content{
width: 75%;
height: 50px;
margin: 0px auto;
background-color: blue;
}
.body{
margin: 20px auto;
width:75%;
height: 1500px;
background-color: yellow;
}
.body_img{
width: 100%;
height: 400px;
background-color: darkorange;
}
.body_content
{
width: 100%;
height: 1050px;
background: blue;
}
.body_no{
width: 100%;
height: 50px;
background: green;
}
.footing{
width: 75%;
height: 300px;
background: indigo;
margin: 0px auto;
}
.footing_content{
width: 100%;
height: 230px;
background-color: green;
}
.footing_subnav{
width: 100%;
height: 70px;
background: black;
}
HTML 文件
<div class="top">
<div class="top_content">
</div>
</div>
<div class="body">
<div class="body_img"></div>
<div class="body_no"></div>
<div class="body_content"></div>
</div>
<div>
<div class="footing">
<div class="footing_content"></div>
<div class="footing_subnav"></div>
</div>
</div>
</body>
</html>