created a new fiddle taking various suggestions through the post... https://jsfiddle.net/tj1zwqat/ https://jsfiddle.net/tj1zwqat/ interesting that it renders

created a new fiddle taking various suggestions through the post... https://jsfiddle.net/tj1zwqat/ https://jsfiddle.net/tj1zwqat/ interesting that it renders perfect ( for me ) in chrome, and a bit of an offset in firefox js setInterval(() => {document.body.innerHTML += (Math.random() > 0.5 ? "╲":"╱")}, 1) css body { line-height:1em; max-width: 500px; word-wrap:break-word;}