@import url("https://fonts.googleapis.com/css2?family=Roboto&display=swap");

canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: auto;
    height: auto;
    z-index: 0;
    background-color: rgb(0, 0, 0);
    filter: contrast(150%)  brightness(35%);
}

/* Phone User */
@media (max-width: 768px) {
    h1 {
        font-size: 1.25rem;
    }

    .container {
        font-size: 0.8rem;
    }

    .btn {
        font-size: 0.8rem;
    }

    #fullscreenBtn {
        font-size: 0.8rem;
        padding: 8px 15px;
    }
}


.firstsectionwrapper {
  position: relative;
  overflow: hidden;
  border-style: none;
  border-color: rgba(255, 255, 255, 0);
  border-width: 1px;
  height: auto;
}

#glCanvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0; /* behind content */
  pointer-events: none; /* canvas won't block interaction */
}

.firstsectionwrapper > *:not(#glCanvas) {
  position: relative;
  z-index: 1; /* bring other content above canvas */
}