body {
	background: linear-gradient(-45deg, #554946, #110409, #627177, #272e2c);
	background-size: 400% 400%;
	animation: gradient 15s ease infinite;
}

@keyframes gradient {
	0% {
		background-position: 0% 50%;
	}
	50% {
		background-position: 100% 50%;
	}
	100% {
		background-position: 0% 50%;
	}
}
body, html {
    height: 100%;
}

/* The hero image */
.hero-image {
  /* Use "linear-gradient" to add a darken background effect to the image (photographer.jpg). This will make the text easier to read */
  background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url("https://apprendre-le-cinema.fr/wp-content/uploads/2017/07/shutterstock_424803793-1080x675.jpg");

  /* Set a specific height */
  height: 50%;

  /* Position and center the image to scale nicely on all screens */
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  position: relative;
}

/* Place text in the middle of the image */
.hero-text {
  text-align: center;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
}
.box{
    display: flex;
    justify-content: center;
    margin: 0 auto;
}