网页排版CSS教学

网页排版CSS教学(30) <TR>
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<DIV class=bg_orange align=center>区　块　性　质　的　Ｃ　Ｓ　Ｓ　指　令</DIV></TD></TR>
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<TD class=b width=275 height=20><SPAN class=ls>margin-top</SPAN>　　　设定上边缘宽度</TD>
<TD class=b width=275 height=20><SPAN class=ls>margin-right</SPAN>　 设定右边缘宽度</TD></TR>
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<TD class=b width=275 height=20><SPAN class=ls>margin-bottom</SPAN>　设定下边缘宽度</TD>
<TD class=b width=275 height=20><SPAN class=ls>margin-left</SPAN>　　设定左边缘宽度</TD></TR></TBODY></TABLE></CENTER>
<DIV><SPAN class=e>支　持：</SPAN><SPAN class=b>ＩＥ３、ＩＥ４、ＮＣ４</SPAN><BR><SPAN class=e>适　用：</SPAN><SPAN class=b>区块元素</SPAN><BR><SPAN class=e>可能值：</SPAN>
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<TD class=c width=150>&lt;length&gt;</TD>
<TD class=d width=350>长度单位，请参考第一章基本单位的相关说明</TD></TR>
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<TD class=c width=150>&lt;percentage&gt;</TD>
<TD class=d width=350>百分比，相对于元素宽度大小</TD></TR>
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<TD class=c width=150>auto</TD>
<TD class=d width=350>使用浏览器预设值</TD></TR></TBODY></TABLE><SPAN class=e>预设值：</SPAN><SPAN class=b>0</SPAN><BR><SPAN class=e>继承性：</SPAN><SPAN class=b>无</SPAN><BR>
<DIV class=ex><SPAN class=ex>一般范例：</SPAN>DIV { margin-top : 20pt }<BR><SPAN class=ex>同轴范例：</SPAN>&lt;DIV style="margin-top:20pt"&gt;</DIV></DIV><BR><BR><SPAN class=l>margin</SPAN>　综合设定边缘宽度