header{
        width: calc(100vw - 8rem);
        height: 3rem;
        padding: 0 4rem 0 4rem;
        display: flex;
        align-items: center;
        justify-content: space-between;
}
header > img{
        height: 2.5rem;
}
header > nav{
        display: flex;
        justify-content: space-evenly;
        flex: 0.9;
}
header > nav > a{
        color: black;
        text-decoration: none;
}