index.html

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Sidia</title> <!-- Change Sidia To Whatever You'd Like -->
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
</head>

<style>
html {
    height: 100%;
}

body {
  /* Permalink - use to edit and share this gradient: http://colorzilla.com/gradient-editor/#87e0fd+0,53cbf1+40,05abe0+100;Blue+3D+%23+16 */
background: #87e0fd; /* Old browsers */
background: -moz-linear-gradient(top, #87e0fd 0%, #53cbf1 40%, #05abe0 100%); /* FF3.6-15 */
background: -webkit-linear-gradient(top, #87e0fd 0%,#53cbf1 40%,#05abe0 100%); /* Chrome10-25,Safari5.1-6 */
background: linear-gradient(to bottom, #87e0fd 0%,#53cbf1 40%,#05abe0 100%); /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#87e0fd', endColorstr='#05abe0',GradientType=0 ); /* IE6-9 */
height: 100%;
    margin: 0;
    background-repeat: no-repeat;
    background-attachment: fixed; 
    color: white;
}

.container {
    position: absolute;
    top: 50%;
    left: 50%;
    -moz-transform: translateX(-50%) translateY(-50%);
    -webkit-transform: translateX(-50%) translateY(-50%);
    transform: translateX(-50%) translateY(-50%);
    text-align: center;
}

.obsolete_cydia {
    position: absolute;
    top: 97%;
    left: 50%;
    -moz-transform: translateX(-50%) translateY(-50%);
    -webkit-transform: translateX(-50%) translateY(-50%);
    transform: translateX(-50%) translateY(-50%);
    text-align: center;
    opacity: 0.5;
}
</style>

<body>

  <div class="container">
<h1>Huoooooh</h1>

<h3> Seems like you did a little Oopsie</h3>

<h3> Add to Sileo Here: <a href="sileo://source/REPLACETHIS">REPLACETHIS</a></h3>

</div>


<div class="obsolete_cydia"> <!-- This is Using Essentialis' "index.html", they added "obsolete_cydia" bullshit. Not Me (Sukarodo) -->

  <h6> Still using Cydia? Tap <a href="cydia://url/https://cydia.saurik.com/api/share#?source=REPLACETHIS">here to add to Cydia</a></h6>

</div>
</body>
</html>