Im not sure what your issue is but I will try and give an answer to what I believe is your problem :)
When you do like this:
<form>
<textarea cols="25" rows="5" required>
</textarea>
</form>
The spaces between your textarea is already rendered when you run the code - this means that when you wanna type in the textarea there is 100 different places you can begin texting.
I think what you wanna do is this:
<form>
<textarea cols="25" rows="5" required></textarea>
</form>
This way the texting in the textarea will begin in the top-left corner of the textarea, that is because you have not rendered any lines when you run this code.
DEMO of the two Versions:
http://jsfiddle.net/2thMQ/4/