having trouble making a module suffix for mod_login

[kiiddo]

Hello everyone, I am working on a website where i try to add a module suffix to the standard mod_login the template base has been created in artisteer but this should not be a problem or related
so this is what i have been doing:

1: made a class in my template.css looking like this:

.modlogin{
margin-left: 110px;
background-image: url(../images/wrapper_login.png);
background-repeat: no-repeat;
width: 311px;
height: 257px;
padding-left: 25px;
padding-top: 10px;
}

i put this on the bottom of my template.css
the image is inside my template image folder so the link forwarding should be right. in the module i added the class suffix as modlogin

however its not showing up at all done several tries and changes but this 1 should be right i guess
im quite new to the skill of html and css so i really dont know where i went wrong

my first try was going for mod anywhere and just load the module inside a div in custom html but since i cant install php 5.3 on my server for several reasons this option is out...

hope that anyone has a solution