RE"SEo keywor raning at continusly

[Sunny3010]

Hi My website keyword ranking is dropping continously..i have complete iwht on page..also there is no sign of penalty by google in websmaster...earlier my ranking were on page 1-2 & 3 for some keywords & now for same keywords ranking is on 7-8 pages & saome of them were not seeing in top 10 pages as well no idea what happend Pls guide me the solution of it..