body {
    margin: 0;
    overflow: hidden;
    width: 100vw;
    height: 100vh;
    background-image: url("./images/background.jpg");
    background-size: cover;
    backdrop-filter:  brightness(50%);
   font-family: Tahoma, Verdana, Segoe, sans-serif;
}

canvas {
    display: block;
}

#canvas_container {
    width: 100%;
    height: 100vh;
}

.btn {
  position: absolute;
  bottom: 30px;
  right: 0px;
  transform: translateX(-50%);
  border: 1px solid white;
  border-radius: 5px;
  font-size: 0.9rem;
  padding: 0.5rem 0.7em;
  background: transparent;
  color: #F9B31C;
  -webkit-font-smoothing: antialiased;
  font-weight: 700;
  cursor: pointer;
  transition: all .3s;
  z-index: 11;
  text-transform: uppercase;
}

.btn:hover {
  background: #ffffff;
  color: #2a2b2f;
}