CSS ???

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border-collapse --- ??? ???? ?? ???? ???? ??? ?????.

border-spacing ---? ???? ???? ??? ?????.

caption-side --- ? ??? ??? ???????.

empty-cells --- ???? ? ?? ???? ??? ?????.

table-layout ---?, ?, ? ?? ????? ?????.

????? ?? ????? ???? ??? ?????. ?? ???? ??? ?? ???? ?????.

<table id="tb">
    <tr>
        <th>name</th>
        <th>age</th>
        <th>number</th>
    </tr>
 
    <tr>
        <td>li</td>
        <td>3</td>
        <td>4</td>
    </tr>
 
    <tr class="tr2">
        <td>li</td>
        <td>3</td>
        <td>4</td>
    </tr>
 
    <tr>
        <td>li</td>
        <td>3</td>
        <td>4</td>
    </tr>
 
    <tr class="tr2">
        <td>li</td>
        <td>3</td>
        <td>4</td>
    </tr>
 
</table>

?? ?? ?? ?????. ????? ???? ???? CSS?? ??(?? ??? ? ?? ???)? ?????.

#tb,tr,th,td{
    border: 1px solid green;
}

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QQ截圖20161011152624.png

??? ?? ?????. ?? CSS? ?? ??? ?????????. ?? border-collapse? ???? ?? ?? ???? ? ?? ??? ?? ??? ??? ???? ??? ??? ??? ??? ?? background-color? ???? ???? ???? text-align? ???? ?? ??? ?????. ?? ???? ???? ?? ?????. ??>

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<html> <head> <style type="text/css"> #customers { font-family:"Trebuchet MS", Arial, Helvetica, sans-serif; width:100%; border-collapse:collapse; } #customers td, #customers th { font-size:1em; border:1px solid #98bf21; padding:3px 7px 2px 7px; } #customers th { font-size:1.1em; text-align:left; padding-top:5px; padding-bottom:4px; background-color:#A7C942; color:#ffffff; } #customers tr.alt td { color:#000000; background-color:#EAF2D3; } </style> </head> <body> <table id="customers"> <tr> <th>Company</th> <th>Contact</th> <th>Country</th> </tr> <tr> <td>Apple</td> <td>Steven Jobs</td> <td>USA</td> </tr> <tr class="alt"> <td>Baidu</td> <td>Li YanHong</td> <td>China</td> </tr> <tr> <td>Google</td> <td>Larry Page</td> <td>USA</td> </tr> <tr class="alt"> <td>Lenovo</td> <td>Liu Chuanzhi</td> <td>China</td> </tr> <tr> <td>Microsoft</td> <td>Bill Gates</td> <td>USA</td> </tr> <tr class="alt"> <td>Nokia</td> <td>Stephen Elop</td> <td>Finland</td> </tr> </table> </body> </html>

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