body {
  margin: 0 auto;
  width: 100%;
  height: 100%;
  min-height: 100vh;
  max-width: 580px;
}

.header {
  position: fixed;
  z-index: 99;
  top: 0;
  width: 100%;
  max-width: 580px;
}

.header > img {
  width: 100%;
  display: block;
}

.footer {
  position: fixed;
  bottom: 0;
  width: 100%;
  z-index: 99;
  max-width: 580px;
}

.footer > img {
  width: 100%;
  display: block;
}

.content img {
  width: 100%;
}

.play-item {
  position: relative;
}

.play-item img {
  width: 100%;
}

.play-item .play-btn {
  display: inline-block;
  width: 50px;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
}

.zw {
  height: 1.2rem;
}

.tips {
  display: none;
  width: 100%;
  text-align: center;
  color: #039;
  font-size: 18px;
  padding: 20px 0px;
}

.jc {
  display: none;
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  z-index: 99;
  color: white;
  background-color: rgb(39, 39, 39);
}

.jc {
  text-align: center;
  padding: 75px 0;
}

.jc img {
  width: 95%;
}

.close {
  position: absolute;
  top: 0px;
  right: 20px;
  font-size: 50px;
  transform: rotate(45deg);
}