Internal Stylesheet in WordPress

i try a lot of time to put an alt atribute in and internal stylesheet page with wordpress. Using de virtual template image.
But when i put the alt attrribute in the internal stylesheet i can’t see the property in the page.
I Use montezuma template.

<style>
    img {
      width:800px;
      height:533px;
      alt="Hola"
    }
</style>

<img src="hola.jpg"> 

Thanks!

Pd: Sorry about my english.