<!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,并非累加,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 www.w3scholl.com.cn */ 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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