html, body {
    width: 100%;
    height: 100%;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

div[layout] {
    overflow: hidden;

    width: 100%;
    height: 100%;

    font-family: 'Open Sans', sans-serif;
    font-weight: 300;
    font-size: 16px;
    letter-spacing: 4px;
    background-color: #6185B8;
    color: #FFFFFF;

    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 1fr 2fr;
    grid-template-areas:
        'header'
        'info'
        'footer';
}

div[layout] > * {
    position: relative;
    text-align: center;
}
div[layout] > div[header] { grid-area: header; }
div[layout] > div[info] { grid-area: info; }
div[layout] > div[footer] { grid-area: footer; }

h1 {
    font-size: 22px;
    font-weight: 700;
    text-transform: uppercase;

    padding: 10px 40px;
    border: 3px solid #FFFFFF;
    border-radius: 4px;
}

*[align='center'] {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}
*[align='vert'] {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

div[smartphone] {
    width: 300px;
    height: 100%;
    top: 20px;

    background-color: #FFFFFF;
    border-radius: 40px 40px 0 0;
    box-shadow: 0 0 10px 0 rgba(0, 0, 0, .2);

    display: grid;
    grid-template-columns: 1fr 250px 1fr;
    grid-template-rows: 75px 1fr;
    grid-template-areas:
        'border border border'
        'left   center right';
}
div[smartphone]::before, div[smartphone]::after {
    display: block;
    content: '';

    position: absolute;
    height: 10px;
    border-radius: 5px;
    left: 50%;
    transform: translateX(-50%);

    background-color: #BABABA;
}
div[smartphone]::before {
    width: 10px;
    top: 20px;
}
div[smartphone]::after {
    width: 50px;
    top: 40px;
}
div[smartphone] > a {
    display: block;
    grid-area: center;

    font-size: 12px;
    text-decoration: none;

    background-color: #93C54A;
    color: #FFFFFF;
    border: 1px solid #BABABA;
    border-radius: 4px;
    padding: 40px 10px;
}
div[smartphone] > a > b {
    font-size: 16px;
    text-decoration: underline;
}