.ola-histogram {
  justify-content: space-around;
  height: 50px;
  flex-flow: row;
  display: flex;
  align-items: flex-end;
  border-bottom: 1px #ccc solid;
  margin-right: 8px;
  margin-left: 8px;
}

.ola-histogram-bar {
  background: #ccc;
  flex: 1;
  transition: all 0.2s ease-in;
}