Hi Expert!

I have a div within another div. I want to set inner div in horizontal center, but I do not used margin and padding as px, because there is irritating for

setting px as hardcoded.

my code as par following!

<div style="background-color:#E5E5E5:height:150px;">

<div style="background-color:#E2E2E2; width:800px; height:100px;"></div>

</div>

Thanks in advance!