Add dynamic content to a webpage

by velo_ninja

HTML

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8"/>
  <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
  <title>Bakery Order Form</title>
  <!-- Font Awesome CSS + JS -->
  <link
    rel="stylesheet"
    href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css"
    integrity="sha512-pY1K2h2Nn6Z4x+Rkpz/NbxB6sZ2vC2M6/JXjhe2ls5g3l1D1K3c+0nXgvSvoUJbC4qG4f9b9pTy3vRcUuOxE2w=="
    crossorigin="anonymous"
    referrerpolicy="no-referrer"
  />
  <script defer src="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/js/all.min.js"></script>
  <style>
     :root {
  --bg: #f4f4f9;
  --panel: #ffffff;
  --primary: #ff6f61;
  --primary-dark: #e65c50;
  --muted: #666;
  --border: #ddd;
  --gap: 14px;
  --radius: 10px;
  --transition: 0.3s ease;
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  height: 100vh;
  background: var(--bg);
  font-family: 'Segoe UI', sans-serif;
  color: var(--muted);
}

.container {
  display: flex;
  width: 100%;
  height: 100%;
}

/* LEFT */
.left {
  flex: 0 0 12%;
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: stretch;
  padding: var(--gap);
  overflow-y: auto;
  transition: all var(--transition);
}

.category {
  display: flex;
  align-items: center;
  padding: 12px;
  margin-bottom: 8px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}

.category:hover {
  background: #f9f9f9;
  transform: translateX(4px);
}

.left input {
  transform: scale(1.2);
  margin-right: 8px;
  accent-color: var(--primary);
}

.left label {
  display: flex;
  align-items: center;
  font-size: 0.95rem;
  cursor: pointer;
  flex-grow: 1;
}

.left label i {
  font-size: 1.2rem;
  margin-right: 10px;
  color: var(--primary);
}

.left input:checked + label {
  background:...

CSS

:root {
  --bg: #f4f4f9;
  --panel: #ffffff;
  --primary: #ff6f61;
  --primary-dark: #e65c50;
  --muted: #666;
  --border: #ddd;
  --gap: 14px;
  --radius: 10px;
  --transition: 0.3s ease;
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  height: 100vh;
  background: var(--bg);
  font-family: 'Segoe UI', sans-serif;
  color: var(--muted);
}

.container {
  display: flex;
  width: 100%;
  height: 100%;
}

/* LEFT */
.left {
  flex: 0 0 12%;
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: stretch;
  padding: var(--gap);
  overflow-y: auto;
  transition: all var(--transition);
}

.category {
  display: flex;
  align-items: center;
  padding: 12px;
  margin-bottom: 8px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}

.category:hover {
  background: #f9f9f9;
  transform: translateX(4px);
}

.left input {
  transform: scale(1.2);
  margin-right: 8px;
  accent-color: var(--primary);
}

.left label {
  display: flex;
  align-items: center;
  font-size: 0.95rem;
  cursor: pointer;
  flex-grow: 1;
}

.left label i {
  font-size: 1.2rem;
  margin-right: 10px;
  color: var(--primary);
}

.left input:checked + label {
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius);
  padding: 6px 10px;
  font-weight: bold;
  box-shadow: var(--shadow);
}

/* MIDDLE */
.middle {
  flex: 1;
  padding: var(--gap);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--gap);
  background: #fff0ee;
  overflow-y: auto;
  transition: all var(--transition);
}

.middle h2 {
  width: 100%;
  text-align: center;
  margin-bottom: var(--gap);
  color: #333;
  font-size: 1.3rem;
}

.form-box {
  background: var(--panel);
  border-radius: var(--radius);
  padding: var(--gap);
  flex: 0 0 30%;
  max-width: 30%;
  height:...