{max-width: 500px, display: block, margin: 0 auto, border: 5px solid black} https://www.youtube.com/watch?v=reSfF60-2S4
{max-width: 500px, display: block, margin: 0 auto, border: 5px solid black}{max-width: 500px, display: block, margin: 0 auto, border: 5px solid black}