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CSS样式之背景、文本

Jun 08, 2016 am 08:47 AM

一、背景

    1、背景颜色用background-color属性,例如:body{background-color:red}
    2、用图像做背景用background-image属性,例如body{background-image:ul1(23.jpg)
    3、背景由图片重复平铺用backgroud-repeat属性,repeat-x或repeat-y分别表示水平或垂直平铺,
         no-repeat表示允许从任何方向上平铺
         例如:body
                 {background-image:url(23.jpg)
                  background-repeat:repeat-x:) } 
    4、用background-position属性将背景定位,[位置:top、bottom、left、right、center、还可使用 
         百分比(50% 50%)、长度值(50px 50px)]
         例如:body
                 {background-image:url(23.jpg)
                  background-position:center}
     5、设置图片关联属性用background-attachment,例如下面的图片背景不会随文字的滚动而滚动
                   body{background-image:url(23.jpg);
                                   background-repeat:no-repeat;
                                   background-attachment:fixed;}
二、文本
     1、缩进文本用text-indent属性,最常见的是段落首行缩进,缩进值可以还负数
          例如:p{text-indent:-5em},但设置负数容易超出浏览器窗口左边界,要特别注意;
          缩进值单位可以是百分数%,长度单位px,度量单位em;
          text-indent属性可以继承,例如:
         div#outer {width:500px;}
         div#inter  {text-indent:10%}
         p{width:200px;}
               
               
some text.some text.some text.
                         

this is a pragramph

               
               
    2、水平对齐用text-align属性(left、right、center、justity)
    3、word-spacing可以改变字(单词)之间的标准间隔,默认值normal与设置值为0是一样的,    
         word-spacing接受正长度值也可接受负长度值
    4、letter-spacing改变字符和字母之间的间距,其他同word-spacing,默认值normal与设置值为0是          
           一样的,接受正长度值和负长度值
    5、text-transform处理文本的大小写(none、uppercase大写、lowercase小写、capitalize首字母为大
         写
    6、text-decoration处理文本装饰(none、underline、overline上划线、line-through贯穿线、blink闪    
        烁
    7、处理空白符white-space    
          值pre-line,空白符:合并,换行符:保留,自动换行:允许;
          值normal,空白符:合并,换行符:忽略,自动换行:允许;
          值nowrap,空白符:合并,换行符:保留,自动换行:不允许
          值pre-wrap,空白符:保留,换行符:保留,自动换行:允许
    8、direction属性影响块级元素中文本的书写方向,列表中布局的方向、内容水平填充其文本框的方向以    
         及两端对齐元素中最后一行的位置(值有两个,ltr和rtk,其中ltr为默认值,为从左到右的方向)
    9、line-height设置行高
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