* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #111;
  color: #fff;
  font-family: Arial, sans-serif;
  width: 100vw;
  height: 100dvh;
  min-height: 100vh;
  overflow: hidden;
  overscroll-behavior: none;
  touch-action: manipulation;
  -webkit-user-select: none;
  user-select: none;
}

#app {
  width: 100vw;
  height: 100dvh;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
}

@supports (height: 100svh) {
  body,
  #app {
    height: 100svh;
  }
}