Screen resolution

Question

i developing web Application but i am getting problem with Screen Resolution.I want  change form Height  in different screen resolution,i did

in css @media  only screen and (max-width:1024){height:650px}

            @media only screen and (max-width:1152){height:630px} but it will apply 650 px.....

let me urgent...i am waiting for ur valuble solution

 

Thanks Advance.