* {
  margin: 0;
  padding: 0;
  list-style: none;
  box-sizing: border-box;
}
a {
  text-decoration: none;
  color: #000;
}
input,
button {
  border: 0;
  outline: none;
}
body,
html {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-size: 1.5vw;
}
.main {
  width: 100%;
  height: 100%;
}
/*加载*/
.load {
  width: 100%;
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  z-index: 2;
  text-align: center;
  background: white;
  display: flex;
  justify-content: center;
  align-items: center;
}
/*首页*/
.main1 {
  display: flex;
  align-items: center;
  justify-content: center;
}
.btns {
  display: flex;
  flex-wrap: wrap;
  width: 100%;
  align-items: center;
  justify-content: center;
}
.btns .btn {
  display: none;
  width: 50%;
  margin: 1rem 0;
}
.btns .btn a {
  margin: auto;
  width: 85%;
  display: block;
}
.btns .btn img {
  width: 100%;
}