body {
  width: 100vw;
  height: 100vh;
  background-color: #f2f2f2;
}
.canvas {
  position: absolute;
  background-color: rgb(0, 0, 0);
  top: 150px;
  left: 150px;
  z-index: 1;
}

.header {
  width: 80%;
  height: 100px;
  margin-left: 90px;
}

.header-content {
  position: relative;
  top: 30px;
  left: 40px;
}