.img-container{
    position: absolute;
    max-width: 600px;
    max-height: 400px;
    z-index: 0;
    filter: opacity(15%);
}

.img-container:last-child{
    bottom: 0;
    right: 0;

}

img{
    max-width: 100%;
    max-height: 100%;
}