@charset "utf-8";

* {
  font-size: 0.24rem;
}

body,
h1,
h2,
h3,
h4,
h5,
h6,
hr,
p,
blockquote,
dl,
dt,
dd,
ul,
ol,
li,
pre,
form,
fieldset,
legend,
button,
input,
textarea,
th,
td {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

button,
input,
select,
textarea,
img {
  vertical-align: middle;
  outline: none;
  border: 0;
}

body {
  font-family: PingFang SC;
  overflow-x: hidden;
  color: #333;
}

html,
body {
  min-height: 100%;
}

a {
  text-decoration: none;
  color: #333;
}

em,
i {
  font-style: normal;
  font-weight: normal;
}

ul,
ol,
li {
  list-style: none;
}

img {
  font-size: 0;
  line-height: 0;
  border: 0;
  vertical-align: middle;
}

* {
  outline: 0;
  -webkit-tap-highlight-color: transparent;
  -webkit-tap-highlight-color: transparent;
  box-sizing: border-box;
}

/* ios兼容 */
input {
  outline: none;
  -webkit-appearance: none;
  /*去除系统默认的样式*/
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  /* 点击高亮的颜色*/
}

img {
  width: 100%;
}

.box {
  max-width: 750px;
  background: #ffffff;
  margin: 0 auto;
  min-height: 100vh;
}

.pr {
  position: relative;
}
.btn {
  width: 4rem;
  max-width: 400px;
  height: 1.2rem;
  max-height: 120px;
  line-height: 1.2rem;
  text-align: center;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}
.btn a {
  display: inline-block;
  width: 100%;
  height: 100%;
}

.btn1 {
  top: 65%;
}
.btn2 {
  top: 74.8%;
}
.btn3 {
  top: 80%;
}

@media screen and (min-width: 750px) {
  .btn {
    line-height: 120px;
  }
}