CSS class question for multiple elements

table.rightlist td
{
    text-align:right;
}

table.rightlist th
{
    te开发者_运维问答xt-align:right;
}

The above code works, but when I tried making

table.rightlist td,th
{
    text-align:right;
}

the th,td isn't working, it only aligns for td, but not for th

You need to fully specify each selector when comma separating them,

table.rightlist td,
table.rightlist th
{
    text-align:right;
}