JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wrap">
    <div class="wrap-inner">
        <div class="content"></div>
        <div class="content"></div>
        <div class="content"></div>
    </div>
</div>

CSS

.wrap{
  border:2px solid green;
  width: 700px;
  height:250px;
  overflow-y:hidden;
}


.wrap-inner{
  width:1000px; /* <---- НЕОБХОДИМАЯ ШИРИНА */
}


.content{
  width:200px;
  height:200px;
  background-color:red;
  margin:20px;
  display: inline-block;
}