```html



  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>PHP: Troubleshooting Thread1
  <script src="/tailwindcss.js">"></script>
  <style>
 .hero {
 background-image: linear-gradient(to bottom, #3498db, #2ecc71);
 background-size:100% 300px;
 background-position:0% 100%;
 height:50vh;
 display: flex;
 justify-content: center;
 align-items: center;
 color: white;
 }
.thread-content {
 padding:2rem;
 }
.scroll-reveal {
 opacity:0;
 transform: translateY(20px);
 transition: opacity 0.5s, transform 0.5s;
 }
.scroll-reveal.show {
 opacity:1;
 transform: translateY(0);
 }
.reply-form {
 background-color: #f7f7f7;
 padding:2rem