JSFiddle - React, Tailwind, and code Playground

by John Doe

HTML

<div class="dijtaj-fullform">
  <div class="dijtaj_choosebox"> 1</div>
  <div class="dijtaj_choosebox slider">
   <div class="wrap">
      <span>2</span>
   </div>
  </div>
  <div class="dijtaj_choosebox slider">
   <div class="wrap">
      <span>3</span>
   </div>
  </div>
  <div class="dijtaj_choosebox slider">
    <div class="wrap">
      <span>4</span>
   </div>
  </div>
</div>

CSS

.dijtaj-fullform {
  display: flex;
  flex-wrap: wrap;
}

.dijtaj_choosebox {
  flex-basis: 1;
  flex-grow: 1;
  background-color: red;
  margin-right: 15px;
}

.dijtaj_choosebox:last-of-type {
  margin-right: 0;
}

.dijtaj_choosebox .wrap {
  width: 100%;
  overflow: hidden;
  display: flex;
}

.dijtaj_choosebox .wrap span {
  width: 2000px;
  display: block;
}