It looks like this is a web page, not a feed. I looked for a feed associated with this page, but couldn't find one. Please enter the address of your feed to validate.

Source: http://www.mechanicalrevolution.com/feed.xml

  1. <!DOCTYPE html>
  2. <html lang="en">
  3.  <head>
  4.    <meta charset="utf-8" />
  5.    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  6.    <title>Page not found</title>
  7.    <style>
  8.      :root {
  9.        --colorRgbFacetsTeal600: 2 128 125;
  10.        --colorTealAction: var(--colorRgbFacetsTeal600);
  11.        --colorRgbFacetsNeutralLight200: 233 235 237;
  12.        --colorHr: var(--colorRgbFacetsNeutralLight200);
  13.        --colorRgbFacetsNeutralLight700: 53 58 62;
  14.        --colorGrayDarkest: var(--colorRgbFacetsNeutralLight700);
  15.        --colorGrayLighter: var(--colorRgbFacetsNeutralLight200);
  16.        --colorText: var(--colorGrayDarkest);
  17.        --effectShadowLightShallow: 0 1px 10px 0 rgb(53 58 62 / 6%),
  18.          0 2px 4px 0 rgb(53 58 62 / 8%);
  19.        --colorRgbFacetsNeutralDark900: 6 11 16;
  20.      }
  21.      body {
  22.        font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
  23.          Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji",
  24.          "Segoe UI Emoji", "Segoe UI Symbol";
  25.        background: white;
  26.        overflow: hidden;
  27.        margin: 0;
  28.        padding: 0;
  29.        line-height: 1.5;
  30.        color: rgb(var(--colorText));
  31.      }
  32.  
  33.      @media (prefers-color-scheme: dark) {
  34.        body {
  35.          background: rgb(var(--colorRgbFacetsNeutralDark900));
  36.        }
  37.      }
  38.  
  39.      h1 {
  40.        margin: 0;
  41.        font-size: 1.375rem;
  42.        line-height: 1;
  43.      }
  44.  
  45.      h1 + p {
  46.        margin-top: 8px;
  47.      }
  48.  
  49.      .main {
  50.        position: relative;
  51.        display: flex;
  52.        flex-direction: column;
  53.        align-items: center;
  54.        justify-content: center;
  55.        height: 100vh;
  56.        width: 100vw;
  57.      }
  58.  
  59.      .card {
  60.        position: relative;
  61.        width: 75%;
  62.        max-width: 364px;
  63.        padding: 24px;
  64.        background: white;
  65.        border-radius: 8px;
  66.        box-shadow: var(--effectShadowLightShallow);
  67.        border: 1px solid rgb(var(--colorGrayLighter));
  68.      }
  69.  
  70.      a {
  71.        margin: 0;
  72.        font-weight: 600;
  73.        color: rgb(var(--colorTealAction));
  74.        text-decoration-skip-ink: all;
  75.        text-decoration-thickness: 1px;
  76.        text-underline-offset: 2px;
  77.        text-decoration-color: rgb(var(--colorTealAction) / 0.5);
  78.        transition: text-decoration-color 0.15s ease-in-out;
  79.      }
  80.  
  81.      a:hover,
  82.      a:focus-visible {
  83.        text-decoration-color: rgb(var(--colorTealAction));
  84.      }
  85.  
  86.      p:last-of-type {
  87.        margin-bottom: 0;
  88.      }
  89.  
  90.      hr {
  91.        border: 0;
  92.        height: 1px;
  93.        background: rgb(var(--colorHr));
  94.        margin-top: 16px;
  95.        margin-bottom: 16px;
  96.      }
  97.  
  98.      .your-site {
  99.        font-size: 0.875rem;
  100.      }
  101.    </style>
  102.  </head>
  103.  <body>
  104.    <div class="main">
  105.      <div class="card">
  106.        <h1>Page not found</h1>
  107.        <p>
  108.          Looks like you’ve followed a broken link or entered a URL that doesn’t
  109.          exist on this site.
  110.        </p>
  111.        <hr />
  112.        <p class="your-site">
  113.          If this is your site, and you weren’t expecting a 404 for this path,
  114.          please visit Netlify’s
  115.          <a
  116.            href="https://answers.netlify.com/t/support-guide-i-ve-deployed-my-site-but-i-still-see-page-not-found/125?utm_source=404page&utm_campaign=community_tracking"
  117.            >“page not found” support guide</a
  118.          >
  119.          for troubleshooting tips.
  120.        </p>
  121.      </div>
  122.    </div>
  123.  </body>
  124. </html>
  125.  

Home · About · News · Docs · Terms

 
Copyright © 2002-9 Sam Ruby, Mark Pilgrim, Joseph Walton, and Phil Ringnalda