how to center the template

What about:

.MainCenter {
  margin: 0 auto;
  float: none;
  overflow: hidden;
}

Thanks for your reply

not working Andrew,I tried

As far as I can see, you don’t have a style.css file in your website (that’s coming from your theme)

there is style.css file in theme ,might be I missing something

Try with

.MainCenter1 {
margin: 0 auto;
float: none;
overflow: hidden;
}

Thanks fister for your reply

no success ??