How do I move an image that has been coded?

[Rofactiof]

Hi I have an image that's already inside of something (Sorry I do not know the correct terms since I'm new to this) \[code\]*<img src="http://imageshack.us/a/img812/1867/startnewproject.jpg"alt="some_text" style="opacity: 0.4; filter: alpha(opacity=40);" />\[/code\]As you can see it's already transparent, but I also want to move this image around using;\[code\]*<img src="http://stackoverflow.com/questions/15857705/yourImageUrl.jpeg"style="position: absolute; top: 10px; left: 10px;" />\[/code\]Am I doing something wrong or is there a different coding that has to be used?Later I also want to use this image as a button, to go to a different page that is already inside of the site.