header {
    display: flex;
    gap: 1rem;
    padding: 2rem;
}

header > h1 {
    flex: 1;
    padding: 0 1rem;
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--white_color);
    line-height: 2.5rem;
    background-color: var(--theme_color);
}