* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-size: 4vw;
}
html,
body {
  width: 100%;
  height: 100%;
      background-color: #f7f9fb;
}
.index {
  height: 100%;
  position: relative;
  background-color: #f7f9fb;
}
.index .bottom {
  position: absolute;
  left: 0;
  bottom: 0;
}
.index .btn {
  width: 91vw;
  height: 33vw;
  position: absolute;
  top: 100vw;
  left: 50%;
  transform: translateX(-50%);
}
.index .mask {
  display: none;
  width: 100%;
  height: 100%;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 9;
  background-color: rgba(0, 0, 0, 0.5);
  transition: all ease 0.2s;
}
.index .choose {
  width: 100%;
  position: fixed;
  left: 0;
  bottom: -100%;
  background-color: #fff;
  border-top-left-radius: 15px;
  border-top-right-radius: 15px;
  z-index: 10;
  transition: all ease 0.2s;
}
.index .choose div {
  line-height: 45px;
  padding: 8px 15px;
  color: #4a4a4a;
}
.import {
  min-height: 90%;
  padding: 0 15px;
  background-color: #f7f9fb;
}
.import .top {
  height: 45px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.import .top > img:nth-of-type(1) {
  width: 15px;
}
.import .top > img:nth-of-type(2) {
  width: 18px;
}
.import .top span {
  font-size: 16px;
  color: #454545;
}
.import .content {
  margin-top: 15px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}
.import .content .input {
  width: 49%;
  margin-bottom: 16px;
  position: relative;
}
.import .content .input input {
  width: 100%;
  padding: 10px;
  border: 2px solid #a4a4a8;
  border-radius: 10px;
  outline: none;
  background-color: transparent;
}
.import .content .input label {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: #999;
  pointer-events: none;
  transition: all 0.2s ease;
  background: #f7f9fb;
  line-height: 1;
  padding-left: 5px;
}
.import .content .input input:focus + label,
.import .content .input input:not(:placeholder-shown) + label {
  padding: 0 5px;
  top: 0;
  transform: translateY(-50%) scale(0.85);
  font-size: 3.5vw;
}
.import .content .input input:focus {
  border-color: #5d5791;
  border-width: 2px;
}