Extra lines in HTML Form

I am having some difficulty with the display of am HTML form. Every line, no matter if it is hidden or comment, occupies its own line on the page (http://snag.gy/fKtG9.jpg). I am finding often that I have problems with line breaks: WordPress removing
or   that I have added for formatting purposes. I am using the Customizr theme, but I did not see any difference when using other themes.

<form action="https://www.paypal.com/cgi-bin/webscr" method="post"><input name="cmd" type="hidden" value="_cart" />
<!-- Form Attributes -->
<input name="upload" type="hidden" value="1" />
<input name="business" type="hidden" value="TosaEastTowne@gmail.com" />
<input name="currency_code" type="hidden" value="USD" />
<!-- Membership Options -->
<input name="item_name_1" type="hidden" value="Membership" />Membership
<input checked="checked" name="amount_1" type="radio" value="10" /> $10 - Standard
<input name="amount_1" type="radio" value="8" /> $8 - Senior
<!-- Donation Options -->
<input name="item_name_2" type="hidden" value="Scholarship Donation" />
Donation Amount $ <input style="width: 30px;" name="amount_2" type="text" value="10" />
<!-- Submit Button -->
<input alt="PayPal - The safer, easier way to pay online!" name="submit" src="https://www.paypalobjects.com/en_US/i/btn/btn_buynowCC_LG.gif" type="image" />
<img src="https://www.paypalobjects.com/en_US/i/scr/pixel.gif" alt="" width="1" height="1" border="0" /></form>