building_tx_mini_wx_rebuild/pages/regular_invite/regular_invite.wxss

/* pages/regular_invite/regular_invite.wxss */
.btn-area {
  position: sticky;
  bottom: 50rpx;
  margin-top: calc(100vh - 264px - 160rpx);
  margin-left: 28rpx;
  margin-right: 28rpx;
}
.btn-area>button {
  background: linear-gradient(180deg, #6EAAFF 0%, #2F6FD1 100%);
  width: 100%;
  height: 110rpx;
  border-radius: 8rpx;
  line-height: 110rpx;
  color: #FFFFFF;
  font-size: 30rpx;
}
.btn-area >.bg-info{
    background: #ccc !important;
}