Ya want to customize yar profile, don't ya?
I've got some good CSS code for ya, then!
Here ya go! (Thanks @Amjam to have provided almost every code here!) :


div.zebra a[href="/member?id=0000"] + div + div::after {content:"Insert Rank Here!" !important;display:block !important;margin-top:5px !important;color:red !important;}

[Will put a "rank" below a person's shouts! Tips: If you delete "+ div", the rank will go up instead !]

div.menu_section {border:2px #a4d3d2  solid!important;border-radius:2px!important;}

[Change the color, size, length of profile/groups borders! Tips (Again...) : If you change "div.menu_section" to "div.zebra" the borders of shouts/comments will change instead!]

body {background-image:url(http://3dspaint.com/images/upload_gallery/22067.jpg)!important; background-position:center center !important}

[Just change the upload_gallery number to what you want and you're good!]

h1 {color:#ff0000 }

[Will change the color of the header texts (Example : Group - Shoutbox, Profile of -----, etc...)]

h1 {background-color:#d345a4 }

[Will change the background color of the headers]

div.menu_section a {color:#849372 }

[Change the color of links. Tips(...Again...): Add : "!important;font-weight;bold" or "!important;font-style;italic"]

div.menu_section {background-color:#439dfe }

[Will change the background color of your profile! Tips : Change "div.menu_section" to "div.zebra" to change the background color of shouts/comments! (You will have to add "!important" after "background-color"... Example :"{background-color:#483929  !important}")]

.avatar { border-radius: 50px !important; height: 35px !important; width: 35px !important; } .nav_avatar { border-radius: 20px !important; height: 32px !important; width: 32px !important; }

[This CSS code will change every pfps to a circle!]

.form_button { background: #ffffff  !important; color:turquoise !important; border-style: solid !important; border-color:turquoise !important;border-width: 4px !important; text-align: center center !important; border-radius: 25px !important; font-family: "helvetica", fantasy !important;font-style: normal !important; font-weight: weight !important;}

[This CSS code will the buttons into a personalized buttons...
Tips : This CSS code is supremely changeable so I recommend you to try to search for what you'll like!]