Moving icon with CSS

I want to align images one underneath the other

[abrodski]

Hello!

I have this problem:
When I try to change old Joomla's boring graphics, new images (icons in Joomla's contact form) are turn to be misaligned one against another.
In other words, I want to know how to move PNG image a little left or right to achieve the desired effect on a page.
I do have a Joomla module that can help me with custom CSS for a sigle page, but I don't know what CSS code to input. And also I don't know whether HTML code also needs to be updated.
Any ideas?

[not2easy]

Hi abrodski, If you could paste the code you currently have, (the part that needs fixing) it could be easier to help with something like this.