Firefox handles the header issue in jquery.

See the following:Code

<SCRIPT type = "text/JavaScript" src = "jquery-1.3.1.js"> </SCRIPT>

<SCRIPT type = "text/JavaScript">

$ (Function (){

$ (': Header'background .css ('background-color',' # ff7300 ');

}) </SCRIPT>

<H1> DDD

<H2> DDD </H2>
<H3> DDD <H4> DDD </H4>
<H5> DDD </H5>
<H6> DDD </H6>
<H7> DDD </H7>

<H8> DDD </H8>

We know that only h1-h6 labels are in HTML code, while H7 and H8 are completely incorrect, but in Firefox (3.6.8), H7 and H8 have background color settings.

The Firefox browser finds that H7 and H8 are displayed in one row (Block-level elements occupy one row). Therefore, it can be determined that Firefox does not use them as normal labels, but jquery script errors. Wait for change...