html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  cursor: default;
  background-color: #07080f; /* 与游戏深空背景同色，适配留白时无白边 */
  font-family: Helvetica, Verdana, Arial, sans-serif;
}

body,
canvas,
div {
  outline: none;
  -moz-user-select: none;
  -webkit-user-select: none;
  -ms-user-select: none;
  -khtml-user-select: none;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

#GameDiv,
#Cocos3dGameContainer,
#GameCanvas {
  width: 100%;
  height: 100%;
  display: block;
}

canvas {
  background-color: rgba(0, 0, 0, 0);
}