.button_group {
  display: inline-flex;
  text-align: center;
  justify-content: center;
  align-items: center;
}
.button_group > div {
  display: inline-block;
}
.button_group .radio {
  display: inline-block;
  border: 1px solid #e9e9e9;
  background: #fff;
  padding: 2px 5px;
  outline: none;
  cursor: pointer;
  margin: 0px 0px 0px -1px;
}
.button_group .radio.active {
  background: #f4f8ff;
  color: #6c91df;
}
.button_group .radio:first-child {
  margin-left: 0px;
  border-radius: 4px 0 0 4px;
}
.button_group .radio:last-child {
  border-radius: 0 4px 4px 0;
}