在桌子上方居中放置按鈕

我對編碼非常陌生，我很難將四個按鈕/一個圖像與我的桌子中間對齊。我試着把它集中，但沒有工作...在桌子上方居中放置按鈕

任何幫助嗎？

這裏是到DEMO

下面的鏈接是HTML：

<center><img src="img"></center> 
     <center><a class="button" data-table="1" href="#">button</a> 
     <a class="button" data-table="2" href="#">button</a> 
     <a class="button" data-table="3" href="#">button</a> 
     <a class="button" data-table="4" href="#">button</a></center> 

      <table id="1">   
      <thead>   
       <tr> 
    <!-- Blank :) But you can enable this by removing "th:first-child{}" in css style :) --> 
      <th>Feature</th> 
      <th>1</th> 
      <th>2</th> 
      <th> Point</th> 

      <tr> 
       <th>Feature</th> 
       <td>Joe</td> 
       <td>Joe</td> 
       <td>2</td> 
      </tr> 
      <tr> 
       <th>Feature</th> 
       <td>Joe</td> 
       <td>Joe</td> 
       <td>2</td> 
      </tr> 
      <tr> 
       <th>Feature</th> 
       <td>Joe</td> 
       <td>Joe</td> 
       <td>2</td> 
      </tr> 
      <tr> 
       <th>Feature</th> 
       <td>Joe</td> 
       <td>Joe</td> 
       <td>2</td> 
      </tr> 
      <tr> 
       <th>Feature</th> 
       <td>Joe</td> 
       <td>Joe</td> 
       <td>2</td> 
      </tr> 
      <tr> 
       <th>Feature</th> 
       <td>Joe</td> 
       <td>Joe</td> 
       <td>2</td> 
      </tr> 
      </tbody> 
     </table> 

     <table id="2"> 
      <thead> 
       <tr> 
    <!-- Blank :) But you can enable this by removing "th:first-child{}" in css style :) --> 
      <th>Feature</th> 
      <th>1</th> 
      <th>2</th> 
      <th> Point</th> 

      <tr> 
       <th>Feature</th> 
       <td>Joe</td> 
       <td>Joe</td> 
       <td>2</td> 
      </tr> 
      <tr> 
       <th>Feature</th> 
       <td>Joe</td> 
       <td>Joe</td> 
       <td>2</td> 
      </tr> 
      <tr> 
       <th>Feature</th> 
       <td>Joe</td> 
       <td>Joe</td> 
       <td>2</td> 
      </tr> 
      <tr> 
       <th>Feature</th> 
       <td>Joe</td> 
       <td>Joe</td> 
       <td>2</td> 
      </tr> 
      <tr> 
       <th>Feature</th> 
       <td>Joe</td> 
       <td>Joe</td> 
       <td>2</td> 
      </tr> 
      <tr> 
       <th>Feature</th> 
       <td>Joe</td> 
       <td>Joe</td> 
       <td>2</td> 
      </tr>  
      </tbody>   
     </table> 

     <table id="3"> 
      <thead> 
       <tr> 
    <!-- Blank :) But you can enable this by removing "th:first-child{}" in css style :) --> 
      <th>Feature</th> 
      <th>1</th> 
      <th>2</th> 
      <th> Point</th> 


      <tr> 
       <th>Feature</th> 
       <td>Joe</td> 
       <td>Joe</td> 
       <td>2</td> 
      </tr> 
      <tr> 
       <th>Feature</th> 
       <td>Joe</td> 
       <td>Joe</td> 
       <td>2</td> 
      </tr> 
      <tr> 
       <th>Feature</th> 
       <td>Joe</td> 
       <td>Joe</td> 
       <td>2</td> 
      </tr> 
      <tr> 
       <th>Feature</th> 
       <td>Joe</td> 
       <td>Joe</td> 
       <td>2</td> 
      </tr> 
      <tr> 
       <th>Feature</th> 
       <td>Joe</td> 
       <td>Joe</td> 
       <td>2</td> 
      </tr> 
      <tr> 
       <th>Feature</th> 
       <td>Joe</td> 
       <td>Joe</td> 
       <td>2</td> 
      </tr>  
     </tbody> 
     </table> 

     <table id="4"> 
      <thead> 
       <tr> 
    <!-- Blank :) But you can enable this by removing "th:first-child{}" in css style :) --> 
      <th>Feature</th>   
      <th>1</th> 
      <th>2</th> 
      <th>3</th> 
      <th>4</th> 

      <tr> 
       <th>Feature</th> 
       <td>Jill</td> 
       <td>Jill</td> 
       <td>50%</td> 
       <td><a href="link"></td>   
      <tr> 
       <th>Feature</th> 
       <td>Jill</td> 
       <td>Jill</td> 
       <td>50%</td> 
       <td><a href="link"></td>  
      </tr> 
      <tr> 
       <th>Feature</th> 
       <td>Jill</td> 
       <td>Jill</td> 
       <td>50%</td> 
       <td><a href="link"></td>  
      </tr> 
      <tr> 
       <th>Feature</th> 
       <td>Jill</td> 
       <td>Jill</td> 
       <td>50%</td> 
       <td><a href="link"></td>  
      </tr> 
      <tr> 
       <th>Feature</th> 
       <td>Jill</td> 
       <td>Jill</td> 
       <td>50%</td> 
       <td><a href="link"></td>  
      </tr> 
      <tr> 
       <th>Feature</th> 
       <td>Jill</td> 
       <td>Jill</td> 
       <td>50%</td> 
       <td><a href="link"></td>  
      </tr>

這裏是CSS：

body{ 
    font-family: sans-serif; 
    font-size: 16px; 
    line-height: 1.5em; 
    text-align: center; 
    margin-top: 1.5rem; 
} 

a{ 
    margin: 0.5rem;  
} 


a.button:nth-child(4) { 
    -moz-box-shadow:inset 0px -3px 7px 0px #878787; 
    -webkit-box-shadow:inset 0px -3px 7px 0px #878787; 
    box-shadow:inset 0px -3px 7px 0px #878787; 
    background:-webkit-gradient(linear, left top, left bottom, color-stop(0.05, #969595), color-stop(1, #787878)); 
    background:-moz-linear-gradient(top, #969595 5%, #787878 100%); 
    background:-webkit-linear-gradient(top, #969595 5%, #787878 100%); 
    background:-o-linear-gradient(top, #969595 5%, #787878 100%); 
    background:-ms-linear-gradient(top, #969595 5%, #787878 100%); 
    background:linear-gradient(to bottom, #969595 5%, #787878 100%); 
    filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#969595', endColorstr='#787878',GradientType=0); 
    background-color:#969595; 
    -moz-border-radius:3px; 
    -webkit-border-radius:3px; 
    border-radius:3px; 
    border:1px solid #000000; 
    display:inline-block; 
    cursor:pointer; 
    color:#ffffff; 
    font-family:arial; 
    font-size:15px; 
    padding:10px 23px; 
    text-decoration:none; 
    text-shadow:0px 1px 0px #ffffff; 
} 
a.button:nth-child(4):hover { 
    background:-webkit-gradient(linear, left top, left bottom, color-stop(0.05, #787878), color-stop(1, #969595)); 
    background:-moz-linear-gradient(top, #787878 5%, #969595 100%); 
    background:-webkit-linear-gradient(top, #787878 5%, #969595 100%); 
    background:-o-linear-gradient(top, #787878 5%, #969595 100%); 
    background:-ms-linear-gradient(top, #787878 5%, #969595 100%); 
    background:linear-gradient(to bottom, #787878 5%, #969595 100%); 
    filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#787878', endColorstr='#969595',GradientType=0); 
    background-color:#787878; 
} 
a.button:nth-child(4):active { 
    position:relative; 
    top:1px; 
} 





a.button:nth-child(3) { 
    -moz-box-shadow:inset 0px -3px 7px 0px #0b359e; 
    -webkit-box-shadow:inset 0px -3px 7px 0px #0b359e; 
    box-shadow:inset 0px -3px 7px 0px #0b359e; 
    background:-webkit-gradient(linear, left top, left bottom, color-stop(0.05, #003df5), color-stop(1, #1c49b0)); 
    background:-moz-linear-gradient(top, #003df5 5%, #1c49b0 100%); 
    background:-webkit-linear-gradient(top, #003df5 5%, #1c49b0 100%); 
    background:-o-linear-gradient(top, #003df5 5%, #1c49b0 100%); 
    background:-ms-linear-gradient(top, #003df5 5%, #1c49b0 100%); 
    background:linear-gradient(to bottom, #003df5 5%, #1c49b0 100%); 
    filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#003df5', endColorstr='#1c49b0',GradientType=0); 
    background-color:#003df5; 
    -moz-border-radius:3px; 
    -webkit-border-radius:3px; 
    border-radius:3px; 
    border:1px solid #000000; 
    display:inline-block; 
    cursor:pointer; 
    color:#ffffff; 
    font-family:arial; 
    font-size:15px; 
    padding:10px 23px; 
    text-decoration:none; 
    text-shadow:0px 1px 0px #ffffff; 
} 
a.button:nth-child(3):hover { 
    background:-webkit-gradient(linear, left top, left bottom, color-stop(0.05, #1c49b0), color-stop(1, #003df5)); 
    background:-moz-linear-gradient(top, #1c49b0 5%, #003df5 100%); 
    background:-webkit-linear-gradient(top, #1c49b0 5%, #003df5 100%); 
    background:-o-linear-gradient(top, #1c49b0 5%, #003df5 100%); 
    background:-ms-linear-gradient(top, #1c49b0 5%, #003df5 100%); 
    background:linear-gradient(to bottom, #1c49b0 5%, #003df5 100%); 
    filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#1c49b0', endColorstr='#003df5',GradientType=0); 
    background-color:#1c49b0; 
} 
a.button:nth-child(3):active { 
    position:relative; 
    top:1px; 
} 



a.button:nth-child(2) { 
    -moz-box-shadow:inset 0px -3px 7px 0px #a38f1f; 
    -webkit-box-shadow:inset 0px -3px 7px 0px #a38f1f; 
    box-shadow:inset 0px -3px 7px 0px #a38f1f; 
    background:-webkit-gradient(linear, left top, left bottom, color-stop(0.05, #fae13c), color-stop(1, #e0c21b)); 
    background:-moz-linear-gradient(top, #fae13c 5%, #e0c21b 100%); 
    background:-webkit-linear-gradient(top, #fae13c 5%, #e0c21b 100%); 
    background:-o-linear-gradient(top, #fae13c 5%, #e0c21b 100%); 
    background:-ms-linear-gradient(top, #fae13c 5%, #e0c21b 100%); 
    background:linear-gradient(to bottom, #fae13c 5%, #e0c21b 100%); 
    filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#fae13c', endColorstr='#e0c21b',GradientType=0); 
    background-color:#fae13c; 
    -moz-border-radius:3px; 
    -webkit-border-radius:3px; 
    border-radius:3px; 
    border:1px solid #000000; 
    display:inline-block; 
    cursor:pointer; 
    color:#ffffff; 
    font-family:arial; 
    font-size:15px; 
    padding:10px 23px; 
    text-decoration:none; 
    text-shadow:0px 1px 0px #ffffff; 
} 
a.button:nth-child(2):hover { 
    background:-webkit-gradient(linear, left top, left bottom, color-stop(0.05, #e0c21b), color-stop(1, #fae13c)); 
    background:-moz-linear-gradient(top, #e0c21b 5%, #fae13c 100%); 
    background:-webkit-linear-gradient(top, #e0c21b 5%, #fae13c 100%); 
    background:-o-linear-gradient(top, #e0c21b 5%, #fae13c 100%); 
    background:-ms-linear-gradient(top, #e0c21b 5%, #fae13c 100%); 
    background:linear-gradient(to bottom, #e0c21b 5%, #fae13c 100%); 
    filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#e0c21b', endColorstr='#fae13c',GradientType=0); 
    background-color:#e0c21b; 
} 
a.button:nth-child(2):active { 
    position:relative; 
    top:1px; 
} 




a.button:nth-child(1){ 
    -moz-box-shadow:inset 0px -3px 7px 0px #e84b52; 
    -webkit-box-shadow:inset 0px -3px 7px 0px #e84b52; 
    box-shadow:inset 0px -3px 7px 0px #e84b52; 
    background:-webkit-gradient(linear, left top, left bottom, color-stop(0.05, #fa202b), color-stop(1, #db1c2f)); 
    background:-moz-linear-gradient(top, #fa202b 5%, #db1c2f 100%); 
    background:-webkit-linear-gradient(top, #fa202b 5%, #db1c2f 100%); 
    background:-o-linear-gradient(top, #fa202b 5%, #db1c2f 100%); 
    background:-ms-linear-gradient(top, #fa202b 5%, #db1c2f 100%); 
    background:linear-gradient(to bottom, #fa202b 5%, #db1c2f 100%); 
    filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#fa202b', endColorstr='#db1c2f',GradientType=0); 
    background-color:#fa202b; 
    -moz-border-radius:3px; 
    -webkit-border-radius:3px; 
    border-radius:3px; 
    border:1px solid #000000; 
    display:inline-block; 
    cursor:pointer; 
    color:#ffffff; 
    font-family:arial; 
    font-size:15px; 
    padding:10px 23px; 
    text-decoration:none; 
    text-shadow:0px 1px 0px #ffffff; 
} 

a.button:hover { 
    background:-webkit-gradient(linear, left top, left bottom, color-stop(0.05, #db1c2f), color-stop(1, #fa202b)); 
    background:-moz-linear-gradient(top, #db1c2f 5%, #fa202b 100%); 
    background:-webkit-linear-gradient(top, #db1c2f 5%, #fa202b 100%); 
    background:-o-linear-gradient(top, #db1c2f 5%, #fa202b 100%); 
    background:-ms-linear-gradient(top, #db1c2f 5%, #fa202b 100%); 
    background:linear-gradient(to bottom, #db1c2f 5%, #fa202b 100%); 
    filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#db1c2f', endColorstr='#fa202b',GradientType=0); 
    background-color:#db1c2f; 
} 
a.button:active { 
    position:relative; 
    top:1px; 
} 


/*** CSS of Pricing Table ***/ 

/** Start of General **/ 

/* Background */ 

body { background-image:url("images/texture.jpg"); background-position: center top; background-repeat: no-repeat; background-attachment: fixed; position:relative; min-width:1400px; font-family: "Arial"; font-size:18px; } 

/** End of General **/ 


/*--------------------------------------------------------------------------------------------------------------*/ 

/** Pricing Table (You need this. Anything else above is just for background) **/ 

table { 
    width:1214px; 
    height:520px; 
    border-spacing: 0px; 
    margin: .5em auto; 
    font-family: "Arial"; 
    font-size:18px; 
} 

th{ 
    width:304px; 
    height:100px; 
    outline:none; 
    background: #30383b; /* Old browsers */ 
    /* IE9 SVG, needs conditional override of 'filter' to 'none' */ 
    background: url(data:image/svg+xml;base64,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); 
    background: -moz-linear-gradient(top, #30383b 0%, #272f32 100%); /* FF3.6+ */ 
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#30383b), color-stop(100%,#272f32)); /* Chrome,Safari4+ */ 
    background: -webkit-linear-gradient(top, #30383b 0%,#272f32 100%); /* Chrome10+,Safari5.1+ */ 
    background: -o-linear-gradient(top, #30383b 0%,#272f32 100%); /* Opera 11.10+ */ 
    background: -ms-linear-gradient(top, #30383b 0%,#272f32 100%); /* IE10+ */ 
    background: linear-gradient(to bottom, #30383b 0%,#272f32 100%); /* W3C */ 
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#30383b', endColorstr='#272f32',GradientType=0); /* IE6-8 */ 
    color:white; 
    border-top: 1px solid #484d50; 
    border-bottom: 1px solid #000; 
    border-left: 1px solid #000; 
    border-right: 1px solid #484d50; 

} 

th:first-child{ /* You can enable it or remove it and you will see, what it change :) */ 
    background:none; 
    border:none; 
    font-size:0px; 
} 

td { 
    width:304px; 
    height:73px; 
    text-align: center; 
    color:#31383b; 
    background: #cd922a; /* Old browsers */ 
    /* IE9 SVG, needs conditional override of 'filter' to 'none' */ 
    background: url(data:image/svg+xml;base64,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); 
    background: -moz-linear-gradient(top, #cd922a 0%, #865e17 100%); /* FF3.6+ */ 
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#f0f0f0), color-stop(100%,#e9e9e9)); /* Chrome,Safari4+ */ 
    background: -webkit-linear-gradient(top, #cd922a 0%,#865e17 100%); /* Chrome10+,Safari5.1+ */ 
    background: -o-linear-gradient(top, #cd922a 0%,#865e17 100%); /* Opera 11.10+ */ 
    background: -ms-linear-gradient(top, #cd922a 0%,#865e17 100%); /* IE10+ */ 
    background: linear-gradient(to bottom, #cd922a 0%,#865e17 100%); /* W3C */ 
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#f0f0f0', endColorstr='#e9e9e9',GradientType=0); /* IE6-8 */ 
    border: 1px solid #000000; 

} 

tr > td#bgtitle{ 
    background: #FA202B; /* Old browsers */ 
    /* IE9 SVG, needs conditional override of 'filter' to 'none' */ 
    background: url(data:image/svg+xml;base64,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); 
    background: -moz-linear-gradient(top, #FA202B 0%, #e01620 100%); /* FF3.6+ */ 
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#ec6b59), color-stop(100%,#dc5a49)); /* Chrome,Safari4+ */ 
    background: -webkit-linear-gradient(top, #FA202B 0%,#e01620 100%); /* Chrome10+,Safari5.1+ */ 
    background: -o-linear-gradient(top, #FA202B 0%,#e01620 100%); /* Opera 11.10+ */ 
    background: -ms-linear-gradient(top, #FA202B 0%,#e01620 100%); /* IE10+ */ 
    background: linear-gradient(to bottom, #FA202B 0%,#e01620 100%); /* W3C */ 
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ec6b59', endColorstr='#dc5a49',GradientType=0); /* IE6-8 */ 
    color:white; 
    border-top: 1px solid #000000; 
    border-bottom: 1px solid #000000; 
    border-left: 1px solid #e01620; 
    border-right: 1px solid #e01620; 

} 
tr > td#bgtitlet{ 
    background: #FAE13C; /* Old browsers */ 
    /* IE9 SVG, needs conditional override of 'filter' to 'none' */ 
    background: url(data:image/svg+xml;base64,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); 
    background: -moz-linear-gradient(top, #FAE13C 0%, #bca71b 100%); /* FF3.6+ */ 
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#ec6b59), color-stop(100%,#dc5a49)); /* Chrome,Safari4+ */ 
    background: -webkit-linear-gradient(top, #FAE13C 0%,#dac431 100%); /* Chrome10+,Safari5.1+ */ 
    background: -o-linear-gradient(top, #FAE13C 0%,#bca71b 100%); /* Opera 11.10+ */ 
    background: -ms-linear-gradient(top, #FAE13C 0%,#bca71b 100%); /* IE10+ */ 
    background: linear-gradient(to bottom, #FAE13C 0%,#bca71b 100%); /* W3C */ 
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ec6b59', endColorstr='#c1ae30',GradientType=0); /* IE6-8 */ 
    color:white; 
    border-top: 1px solid #000000; 
    border-bottom: 1px solid #000000; 
    border-left: 1px solid #bca71b; 
    border-right: 1px solid #bca71b; 

} 
tr > td#bgtitletw{ 
    background: #003DF5; /* Old browsers */ 
    /* IE9 SVG, needs conditional override of 'filter' to 'none' */ 
    background: url(data:image/svg+xml;base64,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); 
    background: -moz-linear-gradient(top, #003DF5 0%, #003ae0 100%); /* FF3.6+ */ 
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#ec6b59), color-stop(100%,#dc5a49)); /* Chrome,Safari4+ */ 
    background: -webkit-linear-gradient(top, #FAE13C 0%,#003ae0 100%); /* Chrome10+,Safari5.1+ */ 
    background: -o-linear-gradient(top, #003DF5 0%,#003ae0 100%); /* Opera 11.10+ */ 
    background: -ms-linear-gradient(top, #003DF5 0%,#003ae0 100%); /* IE10+ */ 
    background: linear-gradient(to bottom, #003DF5 0%,#003ae0 100%); /* W3C */ 
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ec6b59', endColorstr='#dc5a49',GradientType=0); /* IE6-8 */ 
    color:white; 
    border-top: 1px solid #000000; 
    border-bottom: 1px solid #000000; 
    border-left: 1px solid #003ae0; 
    border-right: 1px solid #003ae0; 

} 

tr > td#bgtitlef{ 
    background: #B3B3B3; /* Old browsers */ 
    /* IE9 SVG, needs conditional override of 'filter' to 'none' */ 
    background: url(data:image/svg+xml;base64,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); 
    background: -moz-linear-gradient(top, #B3B3B3 0%, #969595 100%); /* FF3.6+ */ 
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#ec6b59), color-stop(100%,#dc5a49)); /* Chrome,Safari4+ */ 
    background: -webkit-linear-gradient(top, #B3B3B3 0%,#969595 100%); /* Chrome10+,Safari5.1+ */ 
    background: -o-linear-gradient(top, #B3B3B3 0%,#969595 100%); /* Opera 11.10+ */ 
    background: -ms-linear-gradient(top, #B3B3B3 0%,#969595 100%); /* IE10+ */ 
    background: linear-gradient(to bottom, #B3B3B3 0%,#969595 100%); /* W3C */ 
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ec6b59', endColorstr='#dc5a49',GradientType=0); /* IE6-8 */ 
    color:white; 
    border-top: 1px solid #000000; 
    border-bottom: 1px solid #000000; 
    border-left: 1px solid #969595; 
    border-right: 1px solid #969595; 

} 

tr > td a:active{ 
    color:white; 
    position:relative; 
    padding:10px; 
    width:124px; 
    outline:none; 
    background: #dc5a49; /* Old browsers */ 
    /* IE9 SVG, needs conditional override of 'filter' to 'none' */ 
    background: url(data:image/svg+xml;base64,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); 
    background: -moz-linear-gradient(top, #dc5a49 0%, #818080 100%); /* FF3.6+ */ 
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#dc5a49), color-stop(100%,#ec6b59)); /* Chrome,Safari4+ */ 
    background: -webkit-linear-gradient(top, #dc5a49 0%,#818080 100%); /* Chrome10+,Safari5.1+ */ 
    background: -o-linear-gradient(top, #dc5a49 0%,#818080 100%); /* Opera 11.10+ */ 
    background: -ms-linear-gradient(top, #dc5a49 0%,#818080 100%); /* IE10+ */ 
    background: linear-gradient(to bottom, #dc5a49 0%,#818080 100%); /* W3C */ 
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#dc5a49', endColorstr='#ec6b59',GradientType=0); /* IE6-8 */ 
    border-radius: 4px; 
    -webkit-border-radius: 4px; 
    -moz-border-radius: 4px; 
    border-top: 1px solid white; 
} 

/** End of Pricing Table **/ 

/*** End of CSS for Pricing Table ***/ 

/*--------------------------------------------------------------------------------------------------------------*/ 

/*** You can remove this (you don't need it) ***/ 

/** Start of Social Icons **/ 

/* SOCIAL ICONS - GENERAL */ 

.social { 
list-style:none; width:41px; float:right; right:48px; top:-19px; position:absolute; 
} 

.social li { 
float:left; left:10px; background-repeat:no-repeat; padding:5px; 
} 

.social li a { 
display:block; width:48px; height:48px; margin-right:15px; position:relative; text-decoration:none; outline:none; 
} 

.social li a strong { 
font-size:13px; margin-top:6px; font-weight:normal; position:absolute; right:64px; top:-1px; color:#fff; padding:3px; z-index:9999; white-space:nowrap; 
text-shadow:1px 1px 0 rgba(0, 0, 0, 0.75); background-color:rgba(0, 0, 0, 0.7); 
-moz-border-radius:3px; -moz-box-shadow: 0 0 5px rgba(0, 0, 0, 0.5); -webkit-border-radius:3px; -webkit-box-shadow: 0 0 5px rgba(0, 0, 0, 0.5); border-radius:3px; box-shadow: 0 0 5px rgba(0, 0, 0, 0.5); 
} 

li.deviantart { background-image:url("images/deviantart.png"); } 

/* SOCIAL ICONS - CSS3 */ 

#css3:hover li { opacity:0.2; } 

#css3 li { 
    opacity:0.2; transition-property: 500ms; 
    -webkit-transition-property: opacity; -webkit-transition-duration: 500ms; 
    -moz-transition-property: opacity; -moz-transition-duration: 500ms; 
    -o-transition-property: opacity; -o-transition-duration: 500ms; 
} 
#css3 li a strong { 
    opacity:0; transition-property: 300ms; 
    -webkit-transition-property: opacity, top; -webkit-transition-duration: 300ms;transition-duration: 300ms; filter: alpha(opacity=0); 
    -moz-transition-property: opacity, top; -moz-transition-duration: 300ms; 
     -o-transition-property: opacity, top; -o-transition-duration: 300ms; 
    } 

#css3 li:hover { opacity:1; } 
#css3 li:hover a strong { opacity:1; top:-10px; } 

/** End of Social Icons **/ 

/*** You can remove this (you don't need it) ***/ 
tr:nth-child(even){

來源

2014-03-13 user3404573

謝謝大家，我學到了一些東西你們每個新。對此，我真的非常感激。 – user3404573

我要走出你真的不想看到第一個孩子th，如果是這樣的話，我建議你從每一行中刪除這些行，並在你的css文件中引用它。

我糾正你的提琴：http://jsfiddle.net/LpLhP/50/

來源

2014-03-13 05:44:58 webeno

替換您HTML與我

<div style="width:60%;margin-left:30%"> 
    <a class="button" data-table="1" href="#">button</a> 
    <a class="button" data-table="2" href="#">button</a> 
    <a class="button" data-table="3" href="#">button</a> 
    <a class="button" data-table="4" href="#">button</a> 
</div>

關鍵是將所有按鈕放在與桌子寬度相同的div中，然後將按鈕居中。

來源

2014-03-13 05:34:43

它已經與您的表居中。

你有

th:first-child { 
    background: none; 
}

，所以你不能看到表的一部分。

刪除那個background: none;，你將能夠看到它的居中。

小提琴http://jsfiddle.net/LpLhP/46/

另外，如果你使用HTML5，不使用<center>標籤，因爲它們在HTML5棄用。只需用<div>標籤代替，並給他們text-align: center;

來源

2014-03-13 05:36:08 CRABOLO

在桌子上方居中放置按鈕

回答

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