Accordion block not spanning full width

Hi, When I use the Accordion Block it won't span full width across the screen and I don't see any option for changing that. Any ideas? I don't code. Is this a Squarespace issue or are accordion blocks only made to span about 50% across the screen on laptops?

Thanks!

Add to Design > Custom CSS

/* accordion block text width */
.accordion-item__description {
    max-width: 100% !important;
}