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swan lin's List: CSS Study Note

  • Oct 11, 07

    www.w3schools.com/...css_howto.asp css

    • <head> <link rel="stylesheet" type="text/css" href="http://www.w3schools.com/mystyle.css" /> </head>
    • <head> <style type="text/css"> hr {color: sienna} p {margin-left: 20px} body {background-image: url("images/back40.gif")} </style> </head>

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  • Oct 11, 07

    www.w3schools.com/...css_intro.asp css

      • What is CSS?

          
           
        • CSS stands for Cascading Style Sheets
          •  
        • Styles define how to display HTML elements
          •  
        • Styles are normally stored in Style Sheets
          •  
        • Styles were added to HTML 4.0 to solve a problem
          •  
        • External Style Sheets can save you a lot of work
          •  
        • External Style Sheets are stored in CSS files
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        • Multiple style definitions will cascade into one

      • Cascading Order

          

        What style will be used when there is more than one style specified for an HTML element?
                  
         Generally speaking we can say that all the styles will "cascade" into a new "virtual" style sheet by the following rules, where number four has the highest priority: 

         
           
        1. Browser default
          2.  
        2. External style sheet
          3.  
        3. Internal style sheet (inside the <head> tag)
          4.  
        4. Inline style (inside an HTML element)
          5.  
         

        So, an inline style (inside an HTML element) has the highest priority, which means that it will override a style declared inside the <head> tag, in an external style sheet, or in a browser (a default value).

  • Oct 09, 07

    www.blueidea.com/...3574_3.asp css

    • 因为GIF格式的图片文件更小，这样能使页面载入的速度更快，当然使用此格式之前必须确定图片并没有使用太多的颜色，当我们使用了GIF格式时，从肉眼上并不能看出图片有什么太大的变化，因此这是可行的。
    • * 接下来的Banner部分还能使用GIF格式吗？
      答案是不能，因为Banner部分是一个细致的图片，如果使用GIF格式颜色会有太大的损失，所以必须使用JPEG格式，将文件导出为banner.jpg。

  • Oct 09, 07

    www.blueidea.com/...3574_2.asp css

    • 顺序是 上 / 右 / 下 / 左，你也可以书写为margin:0(缩写)；
    • margin:0px auto；
      说明上下边距为0px，左右为自动调整；

    1 more annotation...

  • Oct 16, 07

    cache.baidu.com/c css

    • Border-left-width、border-right-width、border-top-width和border-bottom-width属性

       

      这四个属性分别用于设置左、右、上、下四周边框的宽度，其取值可以是thin、medium、thick和length。其中length是可以使用的长度单位数值，默认值为medium，且不能取负值。

    • Border-style 属性

       

      该属性用于设置边框的的样式，取值可以是none、dotted、dashed、solid、double，groove，ridge，inset，outset。其中，none为默认值，表示无边框；

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  • Oct 16, 07

    blogcup.com/...502238.shtml css

    • 平面示意图

       

    • Margin properties define the space around elements.
      Background properties define the background effects of an element.
      Padding properties define the space between the element border and the element content.
      Border properties define the borders around an element.       - swan lin on 2007-10-16

  • Oct 16, 07

    www.w3schools.com/...css_pseudo_classes.asp css

    • selector:pseudo-class {property: value}
    • selector.class:pseudo-class {property: value}

    1 more annotation...

  • Oct 16, 07

    www.w3schools.com/...css_dimension.asp css

    • The CSS dimension properties allow you to control the height and width of an  element. It also allows you to increase the space between two lines.
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