JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html>

<head>
</head>

<body>
    <div id="outer">
      <div class="left">
          <div id="lh">
              Content here -------------------------------------------------------------------------------------------------------------------------------------------------------------------
          </div>
      </div>
      <div class="right">
          <div id="rh">
              <table>
              <tr>
                  <th>test</th>
                  <th>test</th>
                  <th>test</th>
                  <th>test</th>
                  <th>test</th>
                  <th>test</th>
                   <th>test</th>
                  <th>test</th>
                  <th>test</th>
                  <th>test</th>
                  <th>test</th>
                  <th>test</th>
                   <th>test</th>
                  <th>test</th>
                  <th>test</th>
                  <th>test</th>
                  <th>test</th>
                  <th>test</th>
                   <th>test</th>
                  <th>test</th>
                  <th>test</th>
                  <th>test</th>
                  <th>test</th>
                  <th>test</th>
              </tr>
              <tr>
                <td>test1</td>
                <td>test1</td>
                <td>test1</td>
                <td>test1</td>
                <td>test1</td>
                <td>test1</td>
                <td>test1</td>
                <td>test1</td>
                <td>test1</td>
                <td>test1</td>
                <td>test1</td>
                <td>test1</td>
                <td>test1</td>
                <td>test1</td>
                <td>test1</td>
                <td>test1</td>
                <td>test1</td>
                <td>test1</td>
                <td>test1</td>
                <td>test1</td>
                <td>test1</td>
                <td>test1</td>
                <td>test1</td>
                <td>test1</td>
             ...

CSS

body{
}
#outer {
    margin: 50px;
    position:relative;
}
.left {
  float:left;
  padding:10px;
}
.right {
  float:left;
  padding:10px;
}
#rh {
    overflow:scroll;
}