html5 盒子模型案例

 

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>