* {
  overscroll-behavior: contain;
}

@import url("https://fonts.googleapis.com/css?family=Montserrat:400,400i,700");
body {
  font-family: "Montserrat", sans-serif;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-color: black;

  overflow: hidden;
  margin: 0 auto;
}
.canvas-container {
  width: calc(100vmin - 7rem);
  height: calc(100vmin - 7rem);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.canvas-container:after {
  content: "";
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: black;
  position: absolute;
  opacity: 0.6;
  transition: 0.25s ease;
  pointer-events: none;
}
.canvas-container > button {
  position: fixed;
  position: absolute;
  z-index: 1;
}
.canvas-container.is-active:after {
  opacity: 0;
}
.canvas-container.is-active > button {
  transform: scale(0.8);
  opacity: 0;
  pointer-events: none;
}
.canvas-container > canvas {
  width: 100%;
  height: 100%;
  border-radius: 1px;
  border: 1px solid transparent;
  transition: 0.25s ease;
}
.canvas-container > canvas:focus {
  outline: none;
  box-shadow: 0 0 0 0.5rem #69aac9;
  border-color: #69aac9;
}
.score {
  color: white;
  font-size: 200%;
  margin-bottom: 1rem;
}
button {
  color: white;
  background-color: #69aac9;
  padding: 1rem 2rem;
  font-size: 200%;
  border: 0px solid white;
  transform: scale(1);
  opacity: 1;
  pointer-events: all;
  transition: 0.25s ease;
  text-transform: uppercase;
  cursor: pointer;
  font-family: inherit;
}