.center h2 {
  text-align: center;
}

.v-center-container {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 90%;
}

.center-xy {
  margin: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  -ms-transform: translateY(-50%), translateX(-50%);
  transform: translateY(-50%), translateX(-50%);
}

.content-center {
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
}