header {
    position: fixed;
    color: #333;
    padding: 10px 0;
    text-align: center;
    width: 100%;
    height: 7vh;
    background-color: rgba(35, 35, 35);
    flex-direction: row;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.header-image {
    height: 100%;
}

#header>a {
    height: 7vh;
}