Description

The element .mzp-c-split-container has the rule min-width: $content-xs; (304px) plus padding and margins, so in viewports narrower than 350px or so the Split stops shrinking and can overflow the viewport.

We could remove the min-width but need to see what the repercussions of that are. If removing it breaks things maybe we should at least reduce it to accommodate a 320px viewport (the original iPhone width).