@font-face {
    font-family: 'Sacramento';
    src: url('../fonts/Sacramento-Regular.eot');
    src: url('../fonts/Sacramento-Regular.eot?#iefix') format('embedded-opentype'),
        url('../fonts/Sacramento-Regular.woff2') format('woff2'),
        url('../fonts/Sacramento-Regular.woff') format('woff'),
        url('../fonts/Sacramento-Regular.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Polymath Black ';
    src: url('../fonts/PolymathDispDemo-Black.eot');
    src: url('../fonts/PolymathDispDemo-Black.eot?#iefix') format('embedded-opentype'),
        url('../fonts/PolymathDispDemo-Black.woff2') format('woff2'),
        url('../fonts/PolymathDispDemo-Black.woff') format('woff'),
        url('../fonts/PolymathDispDemo-Black.ttf') format('truetype');
    font-weight: 800;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Polymath Regular';
    src: url('../fonts/PolymathDispDemo-Regular.eot');
    src: url('../fonts/PolymathDispDemo-Regular.eot?#iefix') format('embedded-opentype'),
        url('../fonts/PolymathDispDemo-Regular.woff2') format('woff2'),
        url('../fonts/PolymathDispDemo-Regular.woff') format('woff'),
        url('../fonts/PolymathDispDemo-Regular.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

body,
html {
    background: #FFF8E6;
    font-size: 28px;
    font-family: 'Polymath Regular';
    line-height: 125%;
    margin: 0;
    padding: 0;
}

b,
.btn,
.logo {
    font-family: 'Polymath Black ';
    cursor: pointer;
}

.logo {
    font-size: 24px;
}

.btn {
    color: #000000;
    background: #ffffff;
    font-size: 14px;
    font-family: 'Polymath Black ';
    line-height: initial;
    padding: 15px 20px;
    border: 2px solid #000000;
    border-radius: 30px;
    text-decoration: none;
}

a.btn:active,
a.btn:hover,
a.btn:focus {
    background: #000000;
    color: #ffffff;
}

main,
nav {
    display: flex;
    padding: 30px
}

nav {
    align-items: center;
    justify-content: space-between;
}

main {
    flex-direction: column;
}

main p {
    margin: 12px 0;
}

.signature {
    font-family: 'Sacramento';
    font-size: 48px;
    line-height: initial;
}

.postscript a {
    text-decoration: underline;
}

@media screen and (min-width: 768px) {
    body,
    html {
        font-size: 64px;
    }

    main,
    nav {
        padding: 60px;
    }

    .logo {
        font-size: 36px;
    }

    .btn {
        font-size: 24px;
    }

    .signature {
        font-size: 96px;
    }
}