Souke/backend/web/sass/producer/_update.scss

.producer-update {
    .panel {
      h4 {
        font-size: 23px;
        margin-bottom: 20px;
        text-transform: uppercase;
        border-bottom: solid 1px gray;
      }
      h4:not(:first-child) {
        margin-top: 45px;
      }
    }
}