.scrollable-stepper {
  border: 1px solid red;
}

  .scrollable-stepper .k-stepper {
    overflow-y: hidden;
    overflow-x: auto;
    padding-bottom: 1em;
  }

    .scrollable-stepper .k-stepper .k-step-list-horizontal {
      width: 1600px;
    }

    .scrollable-stepper .k-stepper .k-progressbar {
      width: 1520px; /*(step list width - 1 step width)*/
    }