How can I make my CSS code compatible with all browsers? [closed]

Question

 p {
        margin:0;padding:0;
    }
    p#error {
        color:#FF0000;
        text-align:center;
    }
    p#success {
        color:#3983C2;
        text-align:center;
    }
    div#nav {
        background-image:url('../img/nav.png');
        background-repeat:no-repeat;
        padding-top:5px;
        padding-bottom:5px;
    }
    div#nav, a {
        text-decoration:none;
    }
    body {
        margin:0 auto;
        width:600px;
    }
    div#login, div#register {
        background-image:url('../img/form.png');
        background-repeat:repeat-y;
        padding-top:5px;
        padding-bottom:5px;
    }
    div#login table, div#register table {
        margin:0 auto;
    }
    div#login table td, div#register table td {
        text-align:right;
    }
    div#login input#btn, div#register input#btn {
        background-image:url('../img/btn.png');
        border-style:none;
        width:70px;height:25px;
    }
    div#footer {
        background-image:url('../img/footer.png');
        height:30px;
    }

Here is my CSS code. I don't know how to make this CSS work in other browsers, currently I'm working in Chrome. I already searched the net and found many pages with related information, but these are even more difficult for me to understand. Need your suggestions or etc. Thank you very much!

Answer 1

Your CSS should work in all browsers as is. It may not display the same from browser to browser. Most developers use a reset to fix that issue.

CSS RESET

http://meyerweb.com/eric/tools/css/reset/

or

NORMALIZE

http://necolas.github.com/normalize.css/