.fixed-size-btn {
  flex: 1;
  justify-content: center;
  width: 25%;
  align-items: center;
  text-align: center;
  min-width: 0;
  display: flex;
}

div {
}

.btn-group-equal {
  flex: 0 0 15%;
}

.fixed-size-btn > .btn {
  flex: 1;
  min-width: 0;
}

.text-area-f {
  height: 150px;
}