.flexcontainer{
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  margin: 10px;
  flex-direction: row;
  justify-content: space-around;
  align-items: center;
  background-color: lightgrey;
}

.flexitem{
  flex-grow: 0.5;
}