.field--name-field-members {
  position: relative;
  width: 100vw;
  max-width: 1158px;
  left: 50%;
  transform: translateX(-50%);
  padding: 0 24px;
}
.field--name-field-members > h2 {
  text-align: center;
}
.field--name-field-members > h2:after {
  left: 50%;
  transform: translateX(-50%);
}