.input-group {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  width: 100%;
}
.input-group > .form-control,
.input-group > .form-select {
  position: relative;
  flex: 1 1 auto;
  width: 1%;
  min-width: 0;
}
.input-group > .form-control:focus,
.input-group > .form-select:focus {
  z-index: 3;
}
.input-group .btn {
  position: relative;
  z-index: 2;
}
.input-group .btn:focus {
  z-index: 3;
}

.input-group-text {
  display: flex;
  align-items: center;
  padding: 0.375rem 0.75rem;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  text-align: center;
  white-space: nowrap;
  border-radius: 0.25rem;
}

.input-group-lg > .form-control,
.input-group-lg > .form-select,
.input-group-lg > .input-group-text,
.input-group-lg > .btn {
  padding: 0.5rem 1rem;
  font-size: 1.25rem;
  border-radius: 0.3rem;
}

.input-group-sm > .form-control,
.input-group-sm > .form-select,
.input-group-sm > .input-group-text,
.input-group-sm > .btn {
  padding: 0.25rem 0.5rem;
  font-size: 0.875rem;
  border-radius: 0.2rem;
}

.input-group-lg > .form-select,
.input-group-sm > .form-select {
  padding-left: 3rem;
}

.input-group:not(.has-validation) > :not(:last-child):not(.dropdown-toggle):not(.dropdown-menu),
.input-group:not(.has-validation) > .dropdown-toggle:nth-last-child(n+3) {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}
.input-group.has-validation > :nth-last-child(n+3):not(.dropdown-toggle):not(.dropdown-menu),
.input-group.has-validation > .dropdown-toggle:nth-last-child(n+4) {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}
.input-group > :not(:first-child):not(.dropdown-menu):not(.valid-tooltip):not(.valid-feedback):not(.invalid-tooltip):not(.invalid-feedback) {
  margin-right: -1px;
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}