.block-system-main-block .webform-flexbox {
  display: flex;
  margin: 1em -0.5em;
}

.block-system-main-block .webform-flex--1 {
  flex: 1;
}

.block-system-main-block .webform-flex {
  min-width: 0;
}

.block-system-main-block .webform-flex--container {
  margin: 0 0.5em;
}

.block-system-main-block .webform-flex--container > .form-item {
  margin: 0;
}

.block-system-main-block .webform-flex--container > .form-item > select {
  width: 100%;
}