* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body, html {
  height: 100%;
  font-family: sans-serif;
  background: #c3c2aa; /* beige */
    color: #3d6053; /* turquoise foncé */
    /*#9bb49e /*turquoise clair*/
    /*#a5c6b0 /*turquoise clair + vif*/
    /*#c8b59c /*brun*/
}

.slideshow-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 0;
}

.slide {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 2s ease;
}

.slide.active {
  opacity: 1;
}

.content {
  position: relative;
  z-index: 1;
  padding: 100vh 2rem 2rem;
  background: rgba(255, 255, 255, 0.95);
  color: #111;
}

.content h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.content section {
  margin: 4rem 0;
}

.smartphone {
    display: none;
}

@media (max-width: 640px) {
    .screen {
        display: none;
    }

    .smartphone {
        display: inline-block;
    }
}