Header Drop down menu goes to level 2

https://www.mosidingwindows.com

I'm not a programmer, but I know my way around the files...I'm just trying to edit this page myself(owners son) so we dont have to pay for a minor change...I'm adding things to the drop down menu, but they wrap to a 2nd line...how do I fix that?

Thanks

Change the widths of both of the following to 100%

stylesheet_header_menubackup.css (line 45)

div#dropMenu {
height:35px;
margin:0;
padding:0;
position:relative;
text-align:center;
width:750px;
z-index:1;
}

stylesheet_header_menubackup.css (line 90)

html > body div#dropMenu ul.level1 {
background:white none repeat scroll 0 0;
color:red;
font-family:Georgia,"Times New Roman",Times,serif;
font-size:1.49em;
font-variant:small-caps;
font-weight:bold;
height:35px;
margin:0;
padding:0;
text-align:center;
width:841px;
z-index:1;
}

Hmm...just noticed that has backup in there...delete the backup files from the server OR rename them to something like stylesheet_header_menu.css.bak as they are overiding the ones you want to use, change the width in this one instead after deleting/renaming the backup files

stylesheet_header_menu.css

Thanks for your help that worked! Anyway for me to clean up the code...It seems like page loads are a little slow and there's a ton of code