header{
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    height: 200px;
    padding: 0 30px;
    position: sticky;
    top: 0;
    background-color: transparent;
    z-index: 10; 
    background-color: white;
    border:10px solid;
}
.logo{
    flex: 1;
    display: flex;
    justify-content: center;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}
.logo img{
    width: 250px;
    aspect-ratio: 4/3;
    object-fit: cover;
}
@media (max-width: 550px) {
    header{
        padding: 10px;
        border:8px solid;
    }
.logo img{
    width: 140px;
    aspect-ratio: 4/3;
    object-fit: cover;
}
header{
    height: 140px;
    border:8px solid;
}
}