header {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
}

header .header-top {
    padding-left: var(--page-padding);
    padding-right: var(--page-padding);
    padding-top: 4px;
    padding-bottom: 4px;
    height: var(--header-top-height);
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header .header-bottom {
    padding: 1rem;
    padding-left: var(--page-padding);
    padding-right: var(--page-padding);
    background-color: var(--bg-darker);
    display: flex;
    justify-content: space-between;
    align-items: center;
}