.container-mask{
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transition: all 0.3s;
}

.mask-bg{
  height: 100%;
  width: 100%;
  background: #ffffff;
  // position: absolute;
  z-index: 99;
}

.mask-content {
  display: inline-block;
  // position: absolute;
  z-index: 101;
  overflow: hidden;
}

.center{
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
}