How to center this box_html/css_WEB-ITnose-HTML Tutorial-php.cn

How to center this box_html/css_WEB-ITnose

WBOY

Release： 2016-06-24 12:00:27

Original

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怎么让这个框居中呢
css码

@charset "utf-8";
/* CSS Document */

html{height:100%;border:none;}
body{height:100%;border:none;padding:0;margin:0;text-align:center;font-size:14px;color:#000;background-color:#FFF;}
div,ul,li,img{margin:0;padding:0;border:none;}
ul{list-style-type:none;}
table,input{font-size:12px;}
a:link{ color:#09F; text-decoration:none;  }
a:visited{ color:#09F; text-decoration:none;  }
a:hover{ color:#09F; text-decoration:none;  }
a:active{ color:#09F; text-decoration:none;  }

.mass{width:1024px;}
.center{text-align:center;}
.clear{ clear:both;visibility:hidden;font-size:0px;}
.border{ border:#F00 solid 1px;}

html 码

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text

回复讨论(解决方案)

自身的居中是margin:0 auto;
demo here

<!doctype html><html><head>    <meta charset="UTF-8">    <title></title>    <style type="text/css">        html{height:100%;border:none;}        body{height:100%;border:none;padding:0;margin:0;text-align:center;font-size:14px;color:#000;background-color:#FFF;}        div,ul,li,img{margin:0;padding:0;border:none;}        ul{list-style-type:none;}        table,input{font-size:12px;}        a:link{ color:#09F; text-decoration:none;  }        a:visited{ color:#09F; text-decoration:none;  }        a:hover{ color:#09F; text-decoration:none;  }        a:active{ color:#09F; text-decoration:none;  }        .mass{width:1024px;margin: 0 auto;}        .center{text-align:center;}        .clear{ clear:both;visibility:hidden;font-size:0px;}        .border{ border:#F00 solid 1px;}    </style></head><body><div class="border mass">text</div></body></html>

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自身的居中是margin:0 auto;
demo here

<!doctype html><html><head>    <meta charset="UTF-8">    <title></title>    <style type="text/css">        html{height:100%;border:none;}        body{height:100%;border:none;padding:0;margin:0;text-align:center;font-size:14px;color:#000;background-color:#FFF;}        div,ul,li,img{margin:0;padding:0;border:none;}        ul{list-style-type:none;}        table,input{font-size:12px;}        a:link{ color:#09F; text-decoration:none;  }        a:visited{ color:#09F; text-decoration:none;  }        a:hover{ color:#09F; text-decoration:none;  }        a:active{ color:#09F; text-decoration:none;  }        .mass{width:1024px;margin: 0 auto;}        .center{text-align:center;}        .clear{ clear:both;visibility:hidden;font-size:0px;}        .border{ border:#F00 solid 1px;}    </style></head><body><div class="border mass">text</div></body></html>

Copy after login

这个左漂右漂怎么不起作用？

css码

@charset "utf-8";
/* CSS Document */

html{height:100%;border:none;}
body{height:100%;border:none;padding:0;margin:0;text-align:center;font-size:14px;color:#000;background-color:#FFF;}
div,ul,li,img{margin:0;padding:0;border:none;}
ul{list-style-type:none;}
table,input{font-size:12px;}
a:link{ color:#09F; text-decoration:none; }
a:visited{ color:#09F; text-decoration:none; }
a:hover{ color:#09F; text-decoration:none; }
a:active{ color:#09F; text-decoration:none; }

.mass{width:1024px;margin: 0px auto}
.center{text-align:center;}
.clear{ clear:both;visibility:hidden;font-size:0px;}
.border{ border:#F00 solid 1px;}

#nav{}
#nav.left{ float:left;width:226px;}
#nav.right{ float:right;width:501px;}

html码

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text

The centering of itself is margin: 0 auto;
demo here

<!doctype html><html><head>    <meta charset="UTF-8">    <title></title>    <style type="text/css">        html{height:100%;border:none;}        body{height:100%;border:none;padding:0;margin:0;text-align:center;font-size:14px;color:#000;background-color:#FFF;}        div,ul,li,img{margin:0;padding:0;border:none;}        ul{list-style-type:none;}        table,input{font-size:12px;}        a:link{ color:#09F; text-decoration:none;  }        a:visited{ color:#09F; text-decoration:none;  }        a:hover{ color:#09F; text-decoration:none;  }        a:active{ color:#09F; text-decoration:none;  }        .mass{width:1024px;margin: 0 auto;}        .center{text-align:center;}        .clear{ clear:both;visibility:hidden;font-size:0px;}        .border{ border:#F00 solid 1px;}    </style></head><body><div class="border mass">text</div></body></html>

Copy after login

Why doesn’t this left and right drift work?

css code

@charset "utf-8";
/* CSS Document */

html{height:100%;border:none;}
body{height:100%;border:none;padding:0;margin:0;text-align:center;font-size:14px;color:#000;background-color:#FFF;}
div ,ul,li,img{margin:0;padding:0;border:none;}
ul{list-style-type:none;}
table,input{font-size:12px;}
a:link{ color:#09F; text-decoration:none; }
a:visited{ color:#09F; text-decoration:none; }
a:hover{ color:#09F; text- decoration:none; }
a:active{ color:#09F; text-decoration:none; }

.mass{width:1024px;margin: 0px auto}
.center{text- align:center;}
.clear{ clear:both;visibility:hidden;font-size:0px;}
.border{ border:#F00 solid 1px;}

# nav{}
#nav.left{ float:left;width:226px;}
#nav.right{ float:right;width:501px;}

html code

Untitled Document

text

#nav . left{ float:left;width:226px;}
#nav .right{ float:right;width:501px;}
There should be a space in the middle to indicate the subordinate relationship.