styles.css

body {
  background: #000000;
}

html {
  scroll-behavior: smooth;
}

.top {
  height: 100vh;
  background: #000000;
  text-align: center;
  font-family: sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  color: #fff;
}

.canvas-container {
  height: 10000px;
  background: #101010;
  position: relative;
}

.bg-container {
  margin: 0 auto;
  height: 100%;
  position: absolute;
  width: 100%;
}

.sticky-pos {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  width: 100%;
  position: -webkit-sticky;
  position: sticky;
  top: 0;
  height: 100vh;
}

#canvas {
  position: relative;
  width: auto;
  height: auto;
  max-width: 1000px; /* <- changer ca pour le responsive */
}

@media screen and (max-width: 720px) {

  #canvas {
    max-width: 350px; /* <- changer ca pour le responsive */
  }


}