javascript commons - enter zero dimension
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const a = document.createElement('SPAN');
function enterSpace(){
a.style.position = "absolute";
a.style.width = "1px";
a.style.height = "1px";
a.style.color = "green";
a.style.left = "400px";
a.style.top = "280px";
a.innerHTML = "•";
document.body.appendChild(a);
}enterSpace()