Hi Toph, thanks for this! Have been looking for this for quite some time. Created a variant that uses CSS grid rather than flex. Looks good on desktop, tablet and mobile phone, in all orientations. Like so: <div style="display: grid; grid-template-columns: 1fr 1fr; column-gap: 2em; row-gap: 0;"> Please see https://observablehq.com/@martien/horizontal-inputs

Nice Martien! Added a link to yours.