I need my website to be modified so it can fit in a tablet and phone screen – repost by Slemansh

I have a website that is ready. it looks all good on a computer screen but looks all messy on a tablet and phone screen. I need it to be made to fit on the two smaller screens. I need this done in less… (Budget: $10-$30 USD, Jobs: Graphic Design, HTML, PHP, Website Design)