html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #111111;
  color: white;
  font-family: Arial, Helvetica, sans-serif;
}

.app {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background:
    linear-gradient(
      to right,
      rgba(255, 255, 255, 0.06) 1px,
      transparent 1px
    ),
    linear-gradient(
      to bottom,
      rgba(255, 255, 255, 0.06) 1px,
      transparent 1px
    ),
    #111111;
  background-size: 24px 24px;
}

.box {
  position: absolute;
  left: 0;
  top: 0;
  width: 48px;
  height: 48px;
  /* background: #00c3e3; */
  background: #00e331;
  box-shadow: 0 0 12px rgba(0, 195, 227, 0.6);
}

.red-box {
  position: absolute;
  left: 0;
  top: 0;
  width: 32px;
  height: 32px;
  background: #ff4554;
  box-shadow: 0 0 10px rgba(255, 69, 84, 0.5);
}

.label {
  position: absolute;
  left: 24px;
  bottom: 20px;
  font-family: monospace;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
}