How To Center aStore Themes?

I just created my first aStore, but when browsing the themes I noticed that most of them are aligned to the left. This looks very tacky to me, could someone point me in the right direction for centering the one I select? Or does anyone know of anywhere to buy a nice, centered theme?

 

Go to Edit css
body {
text-align:center;
}

#wrap {
margin:0 auto;
text-align:left;
}
This code insert to left. Do not copy the right side to add it to automatic.

 

Thank you for the help, I do appreciate it!

 

body {
margin:24px;
padding:0px;
background:#E7E4D0;
color:#000000;
min-width:748px;
font-family:'Verdana', sans-serif;
font-size:9pt;
font-weight:500;
line-height:12pt;
text-decoration: none;
text-align:center;
}

#wrap {
width:880 px;
margin:0 auto; }
text-align:left; }

}

 

you can Customize width of page.! Below

table.products {
width:650px;
font-family:’Verdana’, sans-serif;
font-size:9pt;
}

 

Sorry correction: New.
body {
margin:24px;
padding:0px;
background:#E7E4D0;
color:#000000;
min-width:748px;
font-family:'Verdana', sans-serif;
font-size:9pt;
font-weight:500;
line-height:12pt;
text-decoration: none;
text-align:center;
}

#wrap {
width:880 px;
margin:0 auto;
text-align:left;

}

 

Thank you guys very much, it's works perfect for me.

 

thanks Wachiraj