JSFiddle - React, Tailwind, and code Playground

HTML

<div class="main">
      <div class="left">
          <span>Dynamic text Dynamic text Dynamic text Dynamic text Dynamic text Dynamic text Dynamic text Dynamic text Dynamic text Dynamic text Dynamic text Dynamic text Dynamic text Dynamic text Dynamic text Dynamic text Dynamic text Dynamic text Dynamic text Dynamic text Dynamic text Dynamic text</span>
        </div><div class="right">
          <span>Fixed text</span><br/><span>Fixed text</span>
        </div>
</div>

CSS

* {
    margin: 0;
    padding: 0;
}
.main {
    border-collapse: collapse;
    display: table;
}
.left {
    background-color: blue;
    display: table-cell;
}
.right {
    background-color: red;
    display: table-cell;
    text-align: center;
    vertical-align: bottom;
    width: 70px;
}