body, html {
  height: 100%;
}

body {
  height: 100%;
  background-color: #000000;
}

#blackhole {
  height: 100%;
  width: 100%;
  position: relative;
  display: flex;
}

.centerHover {
  width: 255px;
  height: 255px;
  background-color: transparent;
  border-radius: 50%;
  position: absolute;
  left: 50%;
  top: 50%;
  margin-top: -128px;
  margin-left: -128px;
  z-index: 2;
  cursor: pointer;
  line-height: 255px;
  text-align: center;
  transition: all 500ms;
}
.centerHover.open {
  opacity: 0;
  pointer-events: none;
}
.centerHover:hover span {
  color: #DDD;
}
.centerHover:hover span:before {
  background-color: #DDD;
}
.centerHover:hover span:after {
  background-color: #DDD;
}
.centerHover span {
  color: #666;
  font-family: serif;
  font-size: 18px;
  position: relative;
  transition: all 500ms;
}
.centerHover span:before {
  content: "";
  display: inline-block;
  height: 1px;
  width: 16px;
  margin-right: 12px;
  margin-bottom: 4px;
  background-color: #666;
  transition: all 500ms;
}
.centerHover span:after {
  content: "";
  display: inline-block;
  height: 1px;
  width: 16px;
  margin-left: 12px;
  margin-bottom: 4px;
  background-color: #666;
  transition: all 500ms;
}

canvas {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  margin: auto;
}