JSFiddle - React, Tailwind, and code Playground

by camel2243

HTML

<nav><h2>Nav</h2></nav>
<article>
  <section class="left">
    <h2>Left</h2>
    <div class="content">Left Content</div>
  </section>
  <section class="right"><h2>Right</h2></section>
</article>
<footer><h2>Footer</h2></footer>

CSS

* {
  color: darkslategray;
}

nav {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  background: lightskyblue;
  height: 80px;
}

article {
  display: flex;
  width: 100%;
  gap: 12px;
}

.left, .right {
  flex-grow: 1;
  text-align: center;
  min-height: 500px;
  background: aliceblue;
  margin: 12px 0;
  /* scrolling ancestor */
  overflow: auto;
}

.content {
  background: lightpink;
  padding: 24px 0;
  margin: 0 10%;
  /* sticky content */  
  position: sticky;
  top: 10px;
  
}

footer {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  background: lightsteelblue;
  height: 50px;
}