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<H2>边框风格属性(border-style)</H2><P>这个属性用来设定上下左右边框的风格,它的值如下:</P><UL><LI>none (没有边框,无论边框宽度设为多大) <LI>dotted (点线式边框) <LI>dashed (破折线式边框) <LI>solid (直线式边框) <LI>double (双线式边框) <LI>groove (槽线式边框) <LI>ridge(脊线式边框) <LI>inset (内嵌效果的边框) <LI>window-inset (和inset效果相同,但比inset外面多加一个直线边框) <LI>outset (突起效果的边框)</LI></UL><P><A href="../css_examples/020_css_border_style.html">演示示例:分别使用none,dotted, dashed, solid, double, groove, ridge, inset, window-inset, outset的CSS边框风格属性示例</A></P><H2>边框宽度属性(border-width)</H2><P>这个属性用来设定上下左右边框的宽度,它的值如下:</P><UL><LI>medium (是缺省值) <LI>thin (比medium细) <LI>thick (比medium粗) <LI>用长度单位定值。可以用绝对长度单位(cm, mm, in, pt, pc)或者用相对长度单位 (em, ex, px)。</LI></UL><P><A href="../css_examples/021_css_border_width.html">演示示例:分别用medium, thin, thick和长度单位定制的CSS边框宽度属性示例</A></P><H2>边框颜色属性(border-color)</H2><P>这个属性用来设定上下左右边框的颜色。例句如下:</P><PRE>.d5 {border-color:gray;border-style:solid;}</PRE><P><A href="../css_examples/022_css_border_color.html">演示示例</A></P><H2>边框属性(border)</H2><P>这个属性是边框属性的一个快捷的综合写法,它包含border-width, border-style和border-color。例句如下:</P><PRE>.d1 {border:5px solid gray;}</PRE><P><A href="../css_examples/023_css_border.html">演示示例</A> </P><H2>单边边框属性</H2><P>上下左右四个边框不但可以统一设定,也可以分开设定。</P><P>设定上边框属性,你可以使用border-top, border-top-width, border-top-style, border-top-color。</P><P>设定下边框属性,你可以使用border-bottom, border-bottom-width, border-bottom-style, border-bottom-color。</P><P>设定左边框属性,你可以使用border-left, border-left-width, border-left-style, border-left-color。</P><P>设定上边框属性,你可以使用border-right, border-right-width, border-right-style, border-right-color。</P><P><A href="../css_examples/024_css_border_single.html">演示示例:设置单边边框属性的示例</A></P>
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