body {
    margin: 0;
    overflow: hidden;
    width: 100vw;
    height: 100vh;
    background-image: url("https://user-images.githubusercontent.com/26748614/96337246-f14d4580-1085-11eb-8793-a86d929e034d.jpg");
    background-size: cover;
    backdrop-filter:  brightness(50%);
    font-family: 'Gotham-Light', sans-serif; -webkit-font-smoothing: antialiased;  font-smoothing: antialiased; font-size:14px; color:#6f6f6f; font-weight: 400;line-height: 24px;
}

canvas {
    display: block;
}

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

button {
    position: absolute;
    bottom: 5%;
    left: 50%;
    transform: translateX(-50%);
    border: 1px solid white;
    border-radius: 5px;
    font-size: 0.9rem;
    padding: 0.5rem 0.9em;
    background: #000000;
    color: white;
    -webkit-font-smoothing: antialiased;
    font-weight: bold;
    cursor: pointer;
    transition: all .3s;
}

button:hover {
    background: #ffffff;
    color: #000000;
}

.judul{
    position:absolute;
    top: 50px;
    left: 0px;
    right: 0px;
    text-align: center;
    text-shadow: 0px 0px #111;
    font-size: 200%;
    font-weight: 500;
    z-index: 1;
    color: #FFFFFF;
  }

  .judul span{
    margin-top: 10px;
    font-size: 50%;
    line-height: 120%;
    display: block;
    color: #FFFFFF;
  }