html - Why am I able to change the border color and thickness of my table' <thead> , but not the background color? -


i able change border styling of top bar in table, can't change background color no matter do. can tell me going wrong? code below:

<table> <thead>             <tr >         <th>strong>colour</strong></th>         <th><strong>red</strong></th>         <th><strong>green</strong></th>         <th><strong>white</strong></th>     </tr> </thead> <tbody>     <tr>         <td align="left">length (m)</td>         <td>1</td>         <td>0.5</td>         <td>0.5</td>     </tr>     <tr>         <td align="left">weight (kg)</td>         <td>4</td>         <td>2</td>         <td>2</td>     </tr>     <tr>         <td align="left">burn time (sec)</td>         <td>60</td>         <td>22</td>         <td>15</td>     </tr>     <tr>         <td align="left">light output (cd)</td>         <td>200 000</td>         <td>100 000</td>         <td>850 000</td>     </tr>     <tr>       <td align="left">visibility @ sea level (km)</td>       <td>20</td>       <td>15</td>       <td>26</td>   </tr> </tbody>

css:

table th, table td {   border: 1px solid gray; }  table thead  td, table thead tr {   background-color: pink;   border: 4px solid pink; }

your html code has syntax erros:

corrected here , working well: 

<html>    <head>     <link rel="stylesheet" href="style.css">     <script src="script.js"></script>   </head>    <body> <table> <thead>             <tr >         <th><strong>colour</strong></th>         <th><strong>red</strong></th>         <th><strong>green</strong></th>         <th><strong>white</strong></th>     </tr> </thead> <tbody>     <tr>         <td align="left">length (m)</td>         <td>1</td>         <td>0.5</td>         <td>0.5</td>     </tr>     <tr>         <td align="left">weight (kg)</td>         <td>4</td>         <td>2</td>         <td>2</td>     </tr>     <tr>         <td align="left">burn time (sec)</td>         <td>60</td>         <td>22</td>         <td>15</td>     </tr>     <tr>         <td align="left">light output (cd)</td>         <td>200 000</td>         <td>100 000</td>         <td>850 000</td>     </tr>     <tr>       <td align="left">visibility @ sea level (km)</td>       <td>20</td>       <td>15</td>       <td>26</td>   </tr> </tbody> </table>  </html>

http://plnkr.co/edit/xnlr3fw9mo7jwvjrfjgb?p=preview


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