Visual improvement php

Question

I want improve the visual part of this php file, right now I am learning css not started php. so can anyone help me with this
https://forums.alliedmods.net/attachment.php?attachmentid=132773&d=1397813021
this is the link ! just go to webpart and I want there should a custom background and also and transparent page so background can be visible.
and at top most part add a logo.
:) that's it !

Answer 1

body {
background-image:url(Source);
}
add a div in html and this css:
div {
position:fixed;
top:0;
left:0;
width:100vw;
height:100vh;
overflow:auto;
background:rgba(250,250,250,.5);
}
put the logo as <img> at beggining of div area.......

Answer 2

sorry bro but i dont know php

Answer 3

:(