header {
    z-index: 1000;
    color: var(--header-brown);
    position: sticky;
    top: 0;
    background-image: linear-gradient(to bottom, #FFFFFFC0 75%, #FFFFFFC0 0%, transparent);
}

header .title-group {
    padding: var(--page-margin);
    padding-bottom: 1em;
}

article {
    max-width: var(--normal-width);
}

.subscribe-area {
    padding-top: 4em;
    padding-bottom: 1em;
}

.subscribe-area #email, .subscribe-area .subscribe-button {
    background-color: var(--page-color);
}