EDITED: Maybe I should ask which selector sets up the side padding when the screen is reduced to below 480px width? I have been browsing bootstrap-responsi
The CSS by Paulius Marčiukaitis worked nicely for my Genesis theme, here's what how I further modified it for my requirement:
@media only screen and (max-width: 480px) { .entry { background-color: #fff; margin-bottom: 0; padding: 10px 8px;
}