Steps to reproduce

1. Add section;
2. Add 2 column macros, setting each to 50% (or 4 columns at 25%);
3. Add the same image to each of the columns, setting it to display at original size.

Expected behavior
The images are displayed side by side with the same size.

Actual Behavior
The columns end up misaligned, the first image being bigger because the other columns have 20px additional padding left.

Workaround

Add the additional padding in the first column as well.

1. Go to General Configuration > Stylesheet;
2. Add the following lines;

.sectionMacro .columnMacro:first-child {
    padding-left: 20px;
}

3. Save the stylesheet and reload any affected page.