I want to resize my website to different screen resolution.
I have set up my css like this but it doesn't work:

```
body {
    background: #317070;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 14px;
    line-height: 1;
    margin : 0;
    padding: 0;
    width:100%;
    height:100%;
}

```

what should I do ?
RQ: I have checked this link : <http://css-tricks.com/resolution-specific-stylesheets/> 

Edit

Also I have

```
html {
    margin:0;
        padding:0;
    width:100%;
    height:100%;
}

```