header {
    background-color: #e9ecef;
    height: 12.5vh;
    width: 100vw;

    display: flex;
    flex-direction: row;
    align-items: center;
    position: sticky; /* stays visible when scrolling */
    top: 0;
    z-index: 1000; /* keeps it above content visually */
}

header img{
    height: 10vh;
    transform: scale(2);
    margin-left: 3vw;
}

header img:hover{
    cursor: pointer;
    transform: scale(2.40)
}

@media(max-width: 768px) {
    .index-footer-ui{
        justify-content: center;
    }
}