body {
    margin: 0;  
}

.kuvag{
    margin-top: 1em ;
    border: 4px solid black; 
    display: inline-block; 
    border-radius: 10px ;
}

.helicopter{
    position: relative;
    z-index: 3;
}

.background {
    height: 100%;
    width: 100%;
    object-fit: cover;
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    z-index: -1;
}