mobile website for iphone problems

I'm building a mobile version for a website, and i'm having some problems...

The main page of this mobile website is basically an image i made myself with this dimensions:

• width: 320px;

• height: 480px;

So, this in a normal pc browser is displayed 开发者_运维技巧with that dimensions... but in the iphone the image appears in the top left corner with a very small size at the eyes of the user... I'm using width:100%; in the css

This is the first time i'm making a mobile website, so any help would be appreciated! Thanks

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try using this meta tag:

<meta name="viewport" content="width=device-width; initial-scale=1.0; maximum-scale=1.0;">