How to position a div differently for a specific page?

Tags: css,responsive-design

Problem :

I have <div class="rightside"> on every page of my site. It positions a contact form on every page, then at 850 pixels wide screen (for responsive) it hides the contact form with display: none;

@media only screen and (max-width : 850px) {
.rightside {
    display: none;

On the contact us page, I would like to make the contact form still available for this page only. How can I change on the contact us page, so the contact form is still available for devices below 850 on contact us but display: none; on every other page ?

UPDATE: I wish to use the attributes from .rightside in my css. I have tried:

<div class="rightside" id="contactpage"> in contact page 

in the media query for 850

.rightside #contactpage  {
   float: left;

Solution :

try adding another css style to your code just after the existing one, like this:

<div class="rightside contact"></div>

@media only screen and (max-width : 850px) {
    .rightside {
        display: none;
    } {
        display: block;

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