## Content: meta tags

meta tags (CSS Tricks, focusing on social media) and Metadata Guidelines (W3 EOWG)

meta elements from Harvard University:

    <title>Harvard University</title>
    <meta name="description" content="Harvard University is devoted to excellence in teaching, learning, and research, and to developing leaders who make a difference globally." />
    <link rel="canonical" href="https://www.harvard.edu/" />
    <meta property="og:locale" content="en_US" />
    <meta property="og:type" content="website" />
    <meta property="og:title" content="Harvard University" />
    <meta property="og:description" content="Harvard University is devoted to excellence in teaching, learning, and research, and to developing leaders who make a difference globally." />
    <meta property="og:url" content="https://www.harvard.edu/" />
    <meta property="og:site_name" content="Harvard University" />
    <meta property="article:modified_time" content="2021-07-26T15:33:43+00:00" />
    <meta property="og:image" content="https://www.harvard.edu/wp-content/uploads/2021/02/Shield_Social-1-1200x630.jpg" />
    <meta property="og:image:width" content="1200" />
    <meta property="og:image:height" content="630" />
    <meta name="twitter:card" content="summary_large_image" />
    <meta name="twitter:title" content="Harvard University" />
    <meta name="twitter:description" content="Harvard University is devoted to excellence in teaching, learning, and research, and to developing leaders who make a difference globally." />
    <meta name="twitter:image" content="https://www.harvard.edu/wp-content/uploads/2021/02/Shield_Social-1-1024x512.jpg" />