view,
label,
swiper-item,
scroll-view {
  display:flex;
  flex-direction:column;
  flex-shrink: 0;
  flex-grow: 0;
  flex-basis: auto;
  align-items: stretch;
  align-content: flex-start;
}
view,
image,
input,
scroll-view,
swiper,
swiper-item,
text,
textarea,
video {
  position: relative;
  border: 0px solid #000000;
  box-sizing: border-box;
}
swiper-item {
  position: absolute;
}
button {
  margin: 0;
}


.face-container {
  width: 750rpx;
  height: 100vh;
  flex: 1;
  background: skyblue;
}
.back-btn {
  position: fixed;
  right: 30px;
  bottom: 30px;
  width: 100px;
  height: 40px;
  border-radius: 4px;
  background: #ecf5ff;
  display: flex;
  justify-content: center;
  align-items: center;
}
.back-val {
  color: #606266;
  font-size: 18px;
}