* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
  list-style: none;
}
html {
  width: 100%;
  font-size: 27.77777777778vw;
  font-family: -apple-system, Roboto, BlinkMacSystemFont, "Segoe UI",  "Helvetica Neue", Arial, sans-serif;
}
body {
  font-size: 0.16rem;
  width: 100%;
}
img {
  -webkit-user-drag: none;
  -khtml-user-drag: none;
  -moz-user-drag: none;
  -o-user-drag: none;
  user-drag: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  pointer-events: none;
}