于是給td設置了style=margin-right：0px，按優先級也是行內權值高但是為什么無效呢？只能是style=margin-left跟px值才有效果？<div class="head"> <table style="width: 1400px; height: 100px; border: #000000 1px solid;"> <tr> <td style="margin-left: 10px;"> <img src="../image/qq_logo_2x.png"> </td> <td style="position: relative; margin-left: 230px"> <input style="width: 300px; margin-top: 15px;" ?type="text" value="網頁" name="anything">? ? ? ? ? ? ? ? <input style="width: 80px; height: 42px; position: absolute; top: 18px; right:-2px" type="submit" value="搜索"> </td> <td style="margin-left: 245px;"> 136455 </td> </tr> </table> </div>.head{width: 1400px; height:100px; margin:0 auto; border: ?#FC0004 solid 3px;}.head tr td{ float: left; width: 300px; height:80px; margin-top: 5px;}.head tr td input{height:40px; border-radius: 20px;}