Sharepoint 2010 master page layout , fix content display width .

1.
## Copy v4.master as custom.master , and set as default master page , and then under ＜head> , above ＜/head＞ add following code -> style type="text/css" ...

＜style type="text/css"＞
.s4-specialNavLinkList
{
display:none !important;
}
.ms-cui-ribbonTopBars > DIV {
MARGIN: 0px auto; WIDTH: 1000px; FLOAT: none
}
UL.ms-cui-tabBody {
MARGIN: 0px auto; WIDTH: 1000px; FLOAT: none
}
BODY #s4-titlerow > DIV {
MARGIN: 0px auto; WIDTH: 1000px; FLOAT: none
}
#s4-bodyContainer > DIV {
MARGIN: 0px auto; WIDTH: 1000px; FLOAT: none
}
.s4-help {
DISPLAY: none !important;
}
.s4-search {
DISPLAY: none !important;
}
.s4-titletext {
DISPLAY: none !important;
}
body #s4-leftpanel{font-size: 10pt !important; font-family: Verdana !important;}
＜/style＞


2. Hide the left panel at all.
1. Site Actions ＞ Edit Page ＞
2. # Insert ＞ Web Part (or add a Web Part to a Web Part zone)
3. # Under Media and Content select Content Editor and click Add , then save
4. Enter the following HTML / CSS into content and click OK

＜style type="text/css"＞
body #s4-leftpanel { display: none; }
.s4-ca { margin-left: 0px; }
＜/style＞


## There is a good reference doc for sharepoint 2010 layout component at http://erikswenson.blogspot.com/2010/01/sharepoint-2010-base-css-classes.html