General Support: My page is not displaying right. please help

hashmat -

Can you please be specific on what is wrong with how the page is displaying?

Nobody can post a solution unless they know exactly what problem you want resolved.

The problem isn't with gallery.css, but with your website's stylesheet (style.css), specifically the properties for #content2:
#content2 {
float: left;
width: 630px;
margin: 7px 0px 0px 10px;
margin-right: ;
padding: 5px;
text-align: left;
background-color: #ffffff;
}
That is setting the width of that area to 630px rather than 800px. If you change it to the code below, then your gallery will match the width of the rest of the website:
#content2 {
float: left;
width: 795px;
margin: 10px auto;
padding: 5px;
text-align: left;
background-color: #ffffff;
}
I don't know what other areas are impacted by that portion of the stylesheet, so you'll need to check the rest of the website after making that change.