code: function createCanvas (element) {
    const canvas = document.createElement('canvas');
  
    canvas.style.display = 'block';
    canvas.classList.add(CANVAS_CSS_CLASS);
    element.appendChild(canvas);
  
    return canvas;
  }
docs: Create a canvas and append it to the element
  
  @param {HTMLElement} element An HTML Element
  @return {HTMLElement} canvas A Canvas DOM element