wxmp-wodeshebao/public/pages/change-photo/change-photo.wxss

.bg {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  background-color: black;
}

.canvas {
  margin: auto 0;
  background-color: black;
}

.menu {
  position: fixed;
  width: 100%;
  height: 100rpx;
  bottom: 0;
  left: 0;
  display: flex;
}

.menu>view {
  width: 120rpx;
  height: 100rpx;
  font-family: PingFangSC-Regular;
  font-size: 28rpx;
  line-height: 100rpx;
  text-align: center;
  color: #FFFFFF;
}

.menu>view:first-child {
  margin: 0 auto 0 10rpx;
}

.menu>view:last-child {
  margin-right: 10rpx;
}