main.css

html {
  font-size: 10px;
}
* {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}
@media (min-width: 370px) {
  html {
    font-size: 11px;
  }
}
@media (min-width: 400px) {
  html {
    font-size: 12px;
  }
}
@media (min-width: 500px) {
  html {
    font-size: 14px;
  }
}
h1 {
  color: #3cc51f;
  font-size: 2rem;
  margin: 1rem;
  text-align: center;
}
p {
  font-size: 1.4rem;
  color: #999;
  text-align: center;
}
.board {
  position: relative;
  background: url("../img/board.jpg");
  width: 32rem;
  height: 32rem;
  margin: 1.5rem auto;
  background-size: 100%;
}
.board .chessman {
  height: 1.7rem;
  width: 1.7rem;
  margin-left: -0.85rem;
  margin-top: -0.85rem;
  border-radius: .85rem;
  background: white;
  position: absolute;
}
.board .chessman.black {
  background: black;
}
.board .indicator {
  box-sizing: border-box;
  height: 2rem;
  width: 2rem;
  margin-left: -1rem;
  margin-top: -1rem;
  border: 1px solid #EF4F4F;
  position: absolute;
}
.buttons {
  width: 30rem;
  margin: auto;
  padding-bottom: 1rem;
}
.status {
  text-align: center;
  margin: 1rem;
  font-size: 1.4rem;
  height: 2rem;
  line-height: 2rem;
  color: #666;
}
@media screen and (min-width: 1024px) {
  .weui_dialog,
  .weui_toast {
    left: 32.5%;
  }
}
footer {
  margin: 1rem;
  text-align: center;
  color: gray;
}