Workbench
Inspector shell: a fixed-width rail that scrolls on its own beside a pane that fills the rest. An <iframe> in the pane fills it edge to edge. Stacks below 720px.
Live
The pane fills the remaining space.
Inspector shell: a fixed-width rail that scrolls on its own beside a pane that fills the rest. An <iframe> in the pane fills it edge to edge. Stacks below 720px.
The pane fills the remaining space.