Menu and logo width

Hi everyone,

Im building a website and struggling a little bit! I have made a child board from twenty eleven.

Couple of things I’m trying to do; I would like the logo to be fixed width which i managed using:

#branding > a {
    display: block;
    width: 900px;
    height: 150px;
    background: url("..//alh/images/logo.jpg") no-repeat;
}

and I have made the one column width 900px using:

/* One column */
.one-column #page {
	max-width: 900px;

Id like the menu to and column to remain fixed at 900px. At the moment the menu is around 600 which means the “contact” menu part is below the rest, I would like it be be evenly spaced using the child theme css.

Many thanks!