Apply style to only first level of td tags

问题:

Is there a way to apply a Class' style to only ONE level of td tags?

<style>.MyClass td {border: solid 1px red;}</style>

<table class="MyClass">
  <tr>
    <td>
      THIS SHOULD HAVE RED BORDERS
    </td>
    <td>
      THIS SHOULD HAVE RED BORDERS
      <table><tr><td>THIS SHOULD NOT HAVE ANY</td></tr></table>
    </td>
  </tr>
</table>

回答1:

Is there a way to apply a Class' style to only ONE level of td tags?

Yes^*:

.MyClass>tbody>tr>td { border: solid 1px red; }

But! The ‘>’ direct-child selector does not work in IE6. If you need to support that browser (which you probably do, alas), all you can do is select the inner element separately and un-set the style:

.MyClass td { border: solid 1px red; }
.MyClass td td { border: none; }

---

^*Note that the first example references a tbody element not found in your HTML. It should have been in your HTML, but browsers are generally ok with leaving it out... they just add it in behind the scenes.

回答2:

how about using the CSS :first-child pseudo-class:

.MyClass td:first-child { border: solid 1px red; }

回答3:

This style:

table tr td { border: 1px solid red; }
td table tr td { border: none; }

gives me:

this http://img12.imageshack.us/img12/4477/borders.png

However, using a class is probably the right approach here.

回答4:

Just make a selector for tables inside a MyClass.

.MyClass td {border: solid 1px red;}
.MyClass table td {border: none}

(To generically apply to all inner tables, you could also do table table td.)

回答5:

I wanted to set the width of the first column of the table, and I found this worked (in FF7) - the first column is 50px wide:

#MyTable>thead>tr>th:first-child { width:50px;}

where my markup was

<table id="MyTable">
 <thead>
  <tr>
   <th scope="col">Col1</th>
   <th scope="col">Col2</th>
  </tr>
 </thead>
 <tbody>
   ...
 </tbody>
</table>

回答6:

I think, It will work.

.Myclass tr td:first-child{ }

 or 

.Myclass td:first-child { }

回答7:

I guess you could try

table tr td { color: red; }
table tr td table tr td { color: black; }

Or

body table tr td { color: red; }

where 'body' is a selector for your table's parent

But classes are most likely the right way to go here.