let cols = Math.round(Math.sqrt(count) * aspect**.5);
count = cols * Math.ceil(count / cols);
this.form.style['grid-template-columns'] = `repeat(${cols}, 1fr)`;
let cols = Math.round(Math.sqrt(count) * aspect**.5);
count = cols * Math.ceil(count / cols);
this.form.style['grid-template-columns'] = `repeat(${cols}, 1fr)`;