Untitled

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
body, html {
  height: 100%;
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
}

.hero-image {
  background-image: url("https://i.gyazo.com/516db7e210e0eaa847d5fa57834381df.png");
  height: 50%;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  margin: 0px 30px 0px 30px;
}

@media screen and (min-width: 0px) and (max-width: 600px) {
  .hero-image {margin: 0px 0px 0px 0px;}
  .sidenav { display: none; }  /* Hide sidenav on small screens */
}

.sidenav {
  height: 100vh;
  width: 5%;
  position: fixed;
  z-index: 1;
  top: 0;
  left: 0;
  background-color: red;
  overflow-x: hidden;
  padding-top: 30px;
}
</style>
</head>
<body>

<div class="hero-image">

</div>

<div class="sidenav">

</div>


</body>
</html>