cssUniversal.html

<style>

    body {

        margin: 0;

        background-color: rgba(0, 0, 0, 0.09);

        color: rgba(0, 0, 0, 0.6);

        font-family: sans-serif;

    }

    div.container {

        display: flex;

        justify-content: center;

        min-height: 100vh;

        padding: 1rem;

    }

    div.card {

        background-color: rgba(255, 255, 255, 1);

        max-width: 585px;

        width: 100%;

        box-shadow:

            0 4px 8px 0 rgba(0, 0, 0, 0.2),

            0 6px 20px 0 rgba(0, 0, 0, 0.19);

        padding: 1rem;

        border-radius: 4px;

    }

    h1,

    h2,

    h3 {

        margin: 1.5rem 0 0.75rem 0;

    }

    div.card {

        padding-bottom: 3rem;

    }

    .contact {

        text-align: center;

    }

    table {

        font-family: Arial, Helvetica, sans-serif;

        border-collapse: collapse;

        width: 100%;

    }

    

    td, th {

        border: 1px solid #ddd;

        padding: 8px;

    }

    

    tr:nth-child(even){background-color: #f2f2f2;}

    

    tr:hover {background-color: #ddd;}

    

    th {

        padding-top: 12px;

        padding-bottom: 12px;

        text-align: left;

        background-color: #04AA6D;

        color: white;

    }

    @media print {

        body {

            background: white !important;

        }

        .container {

            display: block;

            min-height: auto;

            padding: 0;

            margin: 0;

        }

        .card {

            box-shadow: none !important;

            border: none;

            background: white !important;

            max-width: 100%;

            padding: 1in;

        }

        body, p, li, h1, h2, h3 {

            color: black; !important;

            font-family: "Arial", sans-serif;

        }

        nav, footer, .no-print {

            display: none !important;

        }

        a {

            color: black;

            text-decoration: none;

        }

    }

</style>

<body>

    <div class="container">

        <div class="card">

            <div class="contact">...</div>

            ...

        </div>

    </div>

</body>

CSS for 5 Typical Media Query Break Points (Device Screen Sizes)

CSS for 5 Typical Media Query Break Points (Device Screen Sizes)

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>

/* Typical device breakpoints - 5 groups */

/* Extra small devices (phones, 600px and down) */
@media only screen and (max-width: 600px) {
  [class*="col-"] {width: 100%; }
}

/* Small devices (portrait tablets and large phones, 600px and up) */
@media only screen and (min-width: 600px) {
  .col-min600-1 {width: 8.33%;}
  .col-min600-2 {width: 16.66%;}
  .col-min600-3 {width: 25%;}
  .col-min600-4 {width: 33.33%;}
  .col-min600-5 {width: 41.66%;}
  .col-min600-6 {width: 50%;}
  .col-min600-7 {width: 58.33%;}
  .col-min600-8 {width: 66.66%;}
  .col-min600-9 {width: 75%;}
  .col-min600-10 {width: 83.33%;}
  .col-min600-11 {width: 91.66%;}
  .col-min600-12 {width: 100%;}
}

/* Medium devices (landscape tablets, 768px and up) */
@media only screen and (min-width: 768px) {
  .col-min768-1 {width: 8.33%;}
  .col-min768-2 {width: 16.66%;}
  .col-min768-3 {width: 25%;}
  .col-min768-4 {width: 33.33%;}
  .col-min768-5 {width: 41.66%;}
  .col-min768-6 {width: 50%;}
  .col-min768-7 {width: 58.33%;}
  .col-min768-8 {width: 66.66%;}
  .col-min768-9 {width: 75%;}
  .col-min768-10 {width: 83.33%;}
  .col-min768-11 {width: 91.66%;}
  .col-min768-12 {width: 100%;}
}

/* Large devices (laptops/desktops, 992px and up) */
@media only screen and (min-width: 992px) {
  .col-min992-1 {width: 8.33%;}
  .col-min992-2 {width: 16.66%;}
  .col-min992-3 {width: 25%;}
  .col-min992-4 {width: 33.33%;}
  .col-min992-5 {width: 41.66%;}
  .col-min992-6 {width: 50%;}
  .col-min992-7 {width: 58.33%;}
  .col-min992-8 {width: 66.66%;}
  .col-min992-9 {width: 75%;}
  .col-min992-10 {width: 83.33%;}
  .col-min992-11 {width: 91.66%;}
  .col-min992-12 {width: 100%;}
}

/* Extra large devices (large laptops and desktops, 1200px and up) */
@media only screen and (min-width: 1200px) {
  .col-min1200-1 {width: 8.33%;}
  .col-min1200-2 {width: 16.66%;}
  .col-min1200-3 {width: 25%;}
  .col-min1200-4 {width: 33.33%;}
  .col-min1200-5 {width: 41.66%;}
  .col-min1200-6 {width: 50%;}
  .col-min1200-7 {width: 58.33%;}
  .col-min1200-8 {width: 66.66%;}
  .col-min1200-9 {width: 75%;}
  .col-min1200-10 {width: 83.33%;}
  .col-min1200-11 {width: 91.66%;}
  .col-min1200-12 {width: 100%;}
}

</style>
</head>

<body>

</body>

</html>

MP4 Video which can be played universally - on Apple, Android, Computers

H.264 video (up to 720p, 30 frames per second; main profile level 3.1 with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats)