#CSS
Drawing SVG Electrical Panels You Can Measure on Paper
The electrical panel drawings I generated from HTML looked good, but the technician said the proportions were wrong. I rebuilt the whole sheet, anchored it to actual catalog dimensions, wrote the viewBox directly in millimeters, and added a scale bar so the technician could use a ruler to verify that the drawing in hand really was at 1:10.
Images Fail on Mobile in Pages Hidden with display:none
A site switches pages using display:none, but opening another page on mobile leaves blank black images, even though the files return 200 and both fetch and new Image succeed. The culprit is the IntersectionObserver behind loading=lazy not firing when the page changes from none to block, and simply setting loading=eager is still not enough.
Printing Dozens of Government Forms from HTML with Correct Margins
A government submission document system where users click Print in their browsers and every sheet must fit within its margins, from measuring the actual printable area in millimeters and repeating headers and footers without position fixed, to four image frame types for different documents and automated overflow checks with Playwright instead of inspecting every sheet.