const sketch = p => {
    p.setup = () => {
        const sketchContainer = document.querySelector('#sketch');
        const canvasWidth = parseFloat(getComputedStyle(sketchContainer).width);
        let canvas = p.createCanvas(canvasWidth, canvasWidth);
        canvas.canvas.removeAttribute('style');
        sketchContainer.appendChild(canvas.canvas);

        p.pixelDensity(p.displayDensity());
    };

    p.draw = () => {
        p.background(255);
        p.strokeWeight(4);
        p.stroke(0, 0, 255);
        p.circle(100, 100, 100);
    };
};

new p5(sketch, 'sketch');