.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1em 2rem;
    z-index: 100;
    border-bottom: 1px solid black;

    nav {
        display: flex;
        justify-content: flex-end;
        align-items: center;
        width: 50vw;

        a {
            margin-left: 2em;
            text-decoration: none;
            color: black;

            &:hover,
            &.active {
                text-decoration: underline;
            }
        }
    }
}