.col-center {
  overflow: hidden;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -ms-flex-direction: column;
  -webkit-flex-direction: column;
  flex-direction: column;
  -ms-flex-align: center;
  -webkit-align-items: center;
  align-items: center;
  -ms-flex-pack: center;
  -webkit-justify-content: center;
  justify-content: center;
  -ms-flex: 1 1 auto;
  -webkit-flex: 1 1 auto;
  flex: 1 1 auto;
  text-align: center;
}