css相关解释_html/css_WEB-ITnose
Jun 21, 2016 am 09:05 AM
margin 简写属性在一个声明中设置所有外边距属性。该属性可以有 1 到 4 个值。
margin:10px 5px 15px 20px;
上外边距是 10px
右外边距是 5px
下外边距是 15px
左外边距是 20px
width:100px;
设置元素的宽度
做一个简单的登录页面
.bb{border:2px solid red ;width: 600px;margin: 150px auto}
.textcenter{text-align: center}
.full{width:100%}
div{line-height:40px}
效果
一个大的div包含3个小div
div{line-height:40px} div的行高为40px

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