html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    min-width: 320px;
    overflow: hidden;
    background-color: #fff;
    user-select: none;
    text-align: center;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    display: flex;
    height: 100vh;
    width: 100%;
    margin: auto;
    align-content: center;
    align-items: center;
    justify-content: space-around;
}

img {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 90%;
    margin-bottom: 25px;
    max-width: 300px;
}

button {
    width: 90%;
    max-width: 300px;
    display: block;
    margin-left: auto;
    margin-right: auto;
    margin-top: 20px;
    align-items: center;
    background-color: initial;
    background-image: linear-gradient(#464d55, #25292e);
    border-radius: 8px;
    border-width: 0;
    box-shadow: 0 10px 20px rgba(0, 0, 0, .1), 0 3px 6px rgba(0, 0, 0, .05);
    box-sizing: border-box;
    color: #fff;
    cursor: pointer;
    font-family: expo-brand-demi, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    font-size: 20px;
    height: 52px;
    justify-content: center;
    line-height: 1;
    outline: none;
    overflow: hidden;
    padding: 0 32px;
    text-align: center;
    text-decoration: none;
    transform: translate3d(0, 0, 0);
    transition: all 150ms;
    white-space: nowrap;
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
    font-weight: 700;
}

button:hover {
    box-shadow: rgba(0, 1, 0, .2) 0 2px 8px;
    opacity: .85;
}

button:active {
    outline: 0;
}

button:focus {
    box-shadow: rgba(0, 0, 0, .5) 0 0 0 3px;
}

small {
    display: block;
    margin-left: auto;
    margin-right: auto;
    margin-top: 5px;
    font-size: 12px;
    color: #a5a5a5;
    font-style: italic;
}

small a {
    color: #a5a5a5 !important;
    font-style: normal;
    text-decoration: none;
}

small a:hover {
    text-decoration: underline;
}


div {
    width: 50%;
    height: 50%;
}

h1 {
    font-size: 28px;
    margin: 0;
    margin-bottom: 5px;
}

span {
    font-size: 14px;
}


@media only screen and (max-width: 600px) {
    div {
        width: 85%;
    }

    img {
        width: 90%;
    }

    button {
        font-size: 18px;
        padding: 3px;
    }

    h1 {
        font-size: 22px;
    }

    span {
        font-size: 12px;
    }
}