Add background box behind the module title

Sorry again...
For inset?

open:

templates\hot_sportal\inc\col_main.php

you will see:

<div>
<jdoc:include type="modules" name="inset" style="hot" />
</div>

add class attribute to div like this:

<div class="inset" >
<jdoc:include type="modules" name="inset" style="hot" />
</div>

then you will be able to use:

.inset .moduletable > h3{
display:block;
.....
}