title: <iframe> background tag makes my <grid> x axis scroll bar disappear but not the grid
body: <p>So I have a website, I am building and I have borrowed an <code>iframe</code> from another source. When I apply it to the background of my HTML, it removes a horizontal scrollbar from my horizontal scrolling grid. I feel like this is something to do with lower level programming which I don't really have time to delve into but if there's an easy fix I'm all ears.</p>
  <p><strong>HTML</strong></p>
  <pre><code>&lt;h1 class=&quot;titlec&quot;&gt;Riley's Home Page&lt;/h1&gt;
  &lt;div class=&quot;ticker-scroll-grid&quot;&gt;
    &lt;div class=&quot;card card-tall card-wide&quot;&gt;card1&lt;/div&gt;
    &lt;div class=&quot;card card-tall card-wide&quot;&gt;card2&lt;/div&gt;
    &lt;div class=&quot;card card-tall card-wide&quot;&gt;card3&lt;/div&gt;
    &lt;div class=&quot;card card-tall card-wide&quot;&gt;card4&lt;/div&gt;
    &lt;div class=&quot;card card-tall card-wide&quot;&gt;card4&lt;/div&gt;
    &lt;div class=&quot;card card-tall card-wide&quot;&gt;card5&lt;/div&gt;
    &lt;div class=&quot;card card-tall card-wide&quot;&gt;card6&lt;/div&gt;
    &lt;div class=&quot;card card-tall card-wide&quot;&gt;card7&lt;/div&gt;
    &lt;div class=&quot;card card-tall card-wide&quot;&gt;card8&lt;/div&gt;
    &lt;div class=&quot;card card-tall card-wide&quot;&gt;card9&lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  <p>If I comment out the <code>iframe</code> the scrollbar re-appears.</p>
  <p><strong>CSS</strong></p>
  <pre><code>:root {
    font-size: 16px;
    font-family: 'Open Sans';
    --text-primary: #b6b6b6;
    --text-secondary: #ececec;
    --bg-primary: #23232e;
    --bg-secondary: #141418;
    --transition-speed: 600ms;
    margin: 0;
    padding: 0;
  }
  
  html,
  body {
    color: black;
    background-color: rgb(80, 10, 10);
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    height: 100vh;
    /* width: 100%; */
    display: flex;
    flex-direction: column;
  }
  
  .fluid_block {
    width: 100%;
    height: 100vh;
    background: grey;
    position: fixed;
    margin: 0;
    /* z-index: 0; */
  }
  
  .ifrm_fluid {
    width: 100%;
    height: 100%;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
  }
  
  body::-webkit-scrollbar {
    width: 0.8rem;
  }
  
  body::-webkit-scrollbar-track {
    background: #1e1e24;
  }
  
  body::-webkit-scrollbar-thumb {
    background: #6649b8;
  }
  
  body,
  main {
    /* margin-left: 5rem; */
    margin: 0rem 0rem 0rem 0rem;
    position: relative;
    width: 100%;
    height: 100vh;
    box-sizing: border-box;
  }
  
  .ticker-scroll-grid {
    display: grid;
    gap: 1.5rem;
    margin-top: 1rem;
    margin-bottom: 1rem;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    grid-auto-flow: column;
    grid-auto-columns: minmax(240px, 1fr);
    grid-auto-rows: 60px;
    overflow-x: auto;
    scrollbar-width: thin;
    scrollbar-width: thin;
    padding-left: 0.6rem;
    padding-right: 0.6rem;
    width: 99%;
    box-sizing: border-box;
  }
  
  .gricontainer {
    margin: 10px;
    width: 100%;
  }
  
  .ticker-scroll-grid::-webkit-scrollbar {
    height: 0.4rem;
  }
  
  .ticker-scroll-grid::-webkit-scrollbar-track {
    background: rgb(14, 204, 14);
    margin-left: 1em;
    margin-right: 1em;
    border-radius: 8px;
    /* opacity: 100%; */
  }
  
  .ticker-scroll-grid::-webkit-scrollbar-thumb {
    background: red;
    border-radius: 8px;
  }
  
  .card {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: #353535;
    font-size: 3rem;
    color: #fff;
    box-shadow: rgba(3, 8, 20, 0.1) 0px 0.15rem 0.5rem, rgba(2, 8, 20, 0.1) 0px 0.075rem 0.175rem;
    height: 100%;
    width: 100%;
    border-radius: 10px;
    transition: all 250ms;
    overflow: hidden;
    text-align: center;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    /* object-fit: fill; */
  }
  
  .card:hover {
    box-shadow: rgba(2, 8, 20, 0.1) 0px 0.35em 1.175em, rgba(2, 8, 20, 0.08) 0px 0.175em 0.5em;
    transform: translateY(-3px) scale(1.03);
  }
  </code></pre>