.header{display:flex;flex-direction:column;width:100%;height:580px;background-size:cover;background-position:50%;background-color:#a3a3a3;background-blend-mode:multiply;color:#fff;text-shadow:2px 2px 4px rgba(0,0,0,.5);transition:background-color .3s ease-in-out,color .3s ease-in-out}