:root {
    --nav-width: 15rem;
    --nav-padding: 1rem;
    --article-width: calc(100vw - (var(--nav-padding) + var(--nav-width)));
    --article-padding: 1rem;
    --main-padding: 1rem;
    --main-width: calc(var(--nav-width) + var(--article-width));
    --header-width: var(--main-width);
    --header-padding: 1rem;
    --header-padding-top: 0rem;
    --body-padding: 1rem;
    --body-width: calc(var(--main-width) + 2 * var(--body-padding));
    --scrollable-bottom-margin: 1.25em;
}

html {
    height: 100%;
}

body {
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    height: 100%;
    margin: 0 auto;
    font-family: Calibri, sans-serif;
    overflow: hidden;
    background: antiquewhite;
}

header {
    box-sizing: border-box;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    width: var(--header-width);
    margin: 0 auto;
    padding-top: var(--header-padding-top);
    border-bottom: 1px solid black;
    font-family: 'Segoe UI';
    align-content: baseline;
}

footer {
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    border-top: 1px solid;
    margin-top: 0rem;
}

main {
    box-sizing: border-box;
    display: flex;
    flex-direction: row;
    margin: 0 auto;
    padding-top: var(--main-padding);
    overflow: auto;
    height: 100vh;
}

article {
    box-sizing: border-box;
    flex: 1;
    flex-direction: row;
    max-width: var(--article-width);
    width: var(--article-width);
    --height: calc(100% - 2 * var(--article-padding));
    padding: var(--article-padding);
    padding-top: 0;
    padding-right: calc(2 * var(--article-padding));
    margin: 0;
    margin-bottom: var(--scrollable-bottom-margin);
    overflow-y: auto;
}

section {
    clear: both;
}

content {
    display: block;
}

logo {
    display: flex;
    flex-direction: column;
    align-self: flex-end;
    padding-bottom: 2px;
}

img.logo {
    height: 3rem;
}

brandBanner {
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

brandBanner img {
    height: 5rem;
}

product {
    display: flex;
    flex-direction: column;
    align-content: baseline;
}

productHeader {
    display: flex;
    flex: 1;
    justify-content: center;
}

productName {
    display: flex;
    flex: 1;
    justify-content: center;
    align-content: baseline;
    font-weight: 800;
    margin-top: auto;
}

red {
    font-variant: 'small-caps';
    color: red;
    padding-left: .5rem;
}

h1, h2, h3, h4, h5, h6 {
    color: #111;
    line-height: 125%;
    margin-top: 0rem;
    margin-bottom: 0.5rem;
    font-weight: normal;
}

h1 {
    font-size: 4rem;
    margin-top: 0;
    font-weight: bolder;
}

heading.active, heading:hover {
    border-radius: 10%;
    background: radial-gradient(rgba(255, 255, 255, 1),rgba(255, 255, 255, .05));
}

heading {
    color: #111;
    line-height: 125%;
    margin-top: 0rem;
    margin-bottom: 0.5rem;
    font-weight: normal;
    cursor: pointer;
}

article > heading {
    font-size: 4rem;
    margin-top: 0;
    font-weight: bolder;
    font-variant: small-caps;
}

article > section > heading {
    font-size: 3.25rem;
}

article > section > content > section > heading {
    font-size: 2.5rem;
    margin-top: 2rem;
}

article > section > content > section > content > section > heading {
    font-size: 2rem;
    margin-top: 1rem;
}

article > section > content > section > content > section > content > section > heading {
    font-size: 1.7rem;
    margin-top: 1rem;
}

article > section > content > section > content > section > content > section > content > section > heading {
    font-size: 1.2rem;
    margin-top: 1rem;
    font-style: italic;
}

prodRef {
    font-weight: bolder;
    font-variant: small-caps;
}