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  8.      html {
  9.        height: 100%;
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  11.      body {
  12.        background: url('https://assets.teachablecdn.com/images/teachable-brand-bg.png')
  13.          #09a59a no-repeat;
  14.        height: 100%;
  15.        width: 100%;
  16.        display: block;
  17.        background-size: cover;
  18.        font-family: 'Raleway';
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  23.        line-height: 18px;
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  27.      .section {
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  30.        top: 50%;
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  35.      .section h1 {
  36.        font-size: 26px;
  37.        font-weight: 600 !important;
  38.        margin-top: 0px;
  39.        background-color: #475b5c;
  40.        padding: 18px 22px 18px 22px;
  41.        margin: 0;
  42.        overflow: hidden;
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  44.      .article {
  45.        padding: 24px 18px 18px 18px;
  46.        font-size: 17px;
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  48.      p {
  49.        text-align: center;
  50.        color: #fff;
  51.        margin: auto;
  52.        margin-top: 5%;
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  54.  
  55.      p.large {
  56.        font-weight: 600;
  57.        font-size: 34px;
  58.        line-height: 48px;
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  60.  
  61.      a {
  62.        color: #fff;
  63.        font-weight: 100;
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  65.  
  66.      .bottom {
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  73.        font-size: 17px !important;
  74.        margin-top: 50px;
  75.        font-weight: 200;
  76.        opacity: 0.7;
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  87.        font-size: 13px;
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  89.        line-height: 20px;
  90.        font-weight: 600;
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  92.  
  93.      .logo {
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  95.        width: 73px;
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  100.          width: 100%;
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  104. <script>
  105.      function goBack() {
  106.        window.history.back()
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  108.    </script>
  109. </head>
  110. <body>
  111. <div class="section">
  112. <div class="article">
  113. <p class="large">This page does not exist. Sorry :(</p>
  114. <p class="error-number">Error 404</p>
  115. </div>
  116. </div>
  117. <h1 class="bottom">
  118. <center>
  119. <a href="https://teachable.com/?src=error_pages" class="powered-by">Create Online Courses with
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