<!DOCTYPE html>
<html>
  <head>
    <style>
      html,
      body {
        font-family: Arial, sans-serif;
        height: 100%;
        margin: 0;
        padding: 0;
      }

      .container {
        height: 100%;
        position: relative;
      }

      input {
        font-size: 12px;
      }

      h1 {
        color: #525454;
        font-size: 22px;
        margin: 0 0 10px 0;
        text-align: center;
      }

      #hide-listings,
      #show-listings {
        width: 48%;
      }

      hr