Profile: popolun

Hi,

I added the following code,and it works.
.block .listbox li a:hover{
    background-color:red;
    color:#fff !important;
}

Now, I want the color stayed on the selected catalog. What should I add?
I tried the following code, but it wasn't successful.
.block .listbox li a:focus{
    background-color:red;
    color:#fff !important;
}