* {
  padding: 0;
  margin: 0;
  border: 0;
  list-style: none;
  font-style: normal;
  outline: none;
  box-sizing: border-box;
}
button {
  background: none;
  cursor: pointer;
}

html {
  font-family: 'Microsoft YaHei', sans-serif;
  font-size: 26.66667vw;
  background-color: #eee;
}

html, body {
  max-width: 750px;
  /*overflow: hidden;*/
  margin: 0 auto;
}

body {
  font-size: .16rem;
  width: 100%;
  height: 100%;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

#app {
  width: 100%;
  overflow-x: scroll;
  /*height: 100vh;*/
  /*height: 100dvh;*/
  /*overflow: hidden;*/
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  background-color: #fff;
  position: relative;
}

#app img {
  width: 100%;
  float: left;
}

.btn {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  gap: 8px;
  padding-top: 2.6rem;
}

.btn button:nth-child(1) {
  width: 1.955rem;
  height: 0.515rem;
}

.btn button:nth-child(2) {
  width: 1.955rem;
  height: 0.515rem;
}

.btn > button > img {
  width: 100%;
}

.tips {
  width: 100%;
  height: 100vh;
  font-size: .16rem;
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  justify-content: center;
  align-items: center;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 99;
  background: rgba(0,0,0,.4);
}
.tips > p {
  width: 3.035rem;
  height: 1.4rem;
  background: url("../images/tsk.jpeg") no-repeat center center;
  background-size: contain;
  position: relative;
  display: flex;
  flex-direction: row-reverse;
  padding: .05rem .1rem 0 0;
}

.close-btn {
  width: .2rem;
  height: .2rem;
  /*background: url("../images/close.png") no-repeat center center;*/
  /*background-size: contain;*/
}

.hide {
  display: none !important;
}

@media screen and (min-width: 550px) {
  html {
    font-size: 9rem;
  }
  #app {
    overflow-y: scroll;
  }
}