How To Plat Mount How Can I Build A Simple Plat Form Bed ?

How can I build a simple plat form bed ? - how to plat mount

You need to have a bed in the basement - but changing it is a way of stairs and the full mattress - but no mattress - I hope to make a simple platform - I have a metal bed, "I have a band or a platform around him? " I must be able to do this for me.