<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>css+vid</title>
<style type="text/css">
/*
margin 塌陷效果,上下元素|标签之间使用margin,并不是累加,而是采用marain大的值
margin的缩写
margin:10px,四边的margin都为10px
margin:10px 20px;上下margin为10px,左右margin为20px
margin:10px 20px 30px;
上margin为10px 左右margin为20px,下margin为30px
margin:10px 20px 30px 40px;起始位置上margin为10px,按顺时针排列
对于块级元素|标签,水平居中
width:***px;
margin:0 auto;
padding内填充,内容与边框线之间
padding缩写同margin
padding不占用width、height空间
border
border-width:thin|thick|1px|2px;
border-color: red|green|white|#f90|grb(0-255,g十进制,b十进制);
border-style:solid|dotted(点线)|dashed;
border-top:5px #000 solid;某边的线条
border:5px #000 solid;四边线条
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*/
body{
margin: 0;
}
.box1{
width: 1000px;
height: 200px;
background-color: #666;
margin:0px auto 0px auto;
border-top: 5px red solid;
border-right: 5px yellow solid;
border-bottom: 5px blue solid;
border-left: 5px pink solid;
}
.box2{
height: 600px;
width: 1000px;
background-color: green;
margin: 0px auto 0px auto;
padding: 0px
</style>
</head>
<body>
<div class="box1"></div>
<div class="box2">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Hic rerum autem illum quae, obcaecati, sit ducimus, fuga delectus expedita officia voluptatibus ipsum. Dicta possimus, pariatur error, nulla distinctio atque tempora!</div>
</body>
</html>
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