Remove padding around images in UPFRONT theme

I created a section along the top of my theme, and want to have the logo "hanging" off the bottom of the logo. Unfortunately upfront creates a standard amount of padding around the image, so it doesn't touch the top bar. Please help me remove the padding around my images. I tried this approach: https://premium.wpmudev.org/forums/topic/remove-default-padding-around-images

...and it didn't work. I'm new at this. Help! Thanks!