* {
  margin: 0;
  padding: 0;
}

body, html {
  width: 100%;
  height: 100%;
 /*  position: relative; */
}

body {
  background: radial-gradient(circle, #6d2717, #0c0000);
}

canvas {
  pointer-events: none;
}

/* a, a:focus {
  position: fixed;
  top: 0;
  left: 0;
  margin: 25px;
  color: #ddd;
} */

.controls {
  width: 500px;
  display: inline-block;
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translate(-50%, 0);
}

.btn-group {
  display: inline-block;
}

.btn {
  display: inline-block;
  margin-bottom: 0;
  font-weight: 500;
  text-align: center;
  -ms-touch-action: manipulation;
  touch-action: manipulation;
  cursor: pointer;
  background-image: none;
  border: 1px solid transparent;
  white-space: nowrap;
  line-height: 1.5;
  padding: 4px 15px;
  font-size: 12px;
  border-radius: 0px;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
  transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
  position: relative;
  color: rgba(0, 0, 0, 0.65);
  background-color: #fff;
  border-color: #d9d9d9;
}

.btn:first-child {
  border-radius: 4px 0 0 4px;
}

.btn:last-child {
  border-radius: 0 4px 4px 0;
}

.btn.active {
  color: #fff;
  background-color: #dc7953;
  border-color: #dc7953;
}

.rotate {
  margin-left: 20px;
}

.rotate .btn {
  border: none;
  border-radius: 20px;
}