diff --git a/background.png b/background.png
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diff --git a/index.html b/index.html
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--- /dev/null
+++ b/index.html
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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Document</title>
+    <link rel="stylesheet" href="style.css">
+</head>
+<body>
+
+    <div class="main-container">
+        
+        <div class="welcome-section">
+            <h1>Welcome to Paint Quote System</h1>
+            <div class="divider"></div>
+            <p>
+                Welcome to Paint Quote System. Welcome to Paint Quote System.
+        </div>
+
+        <div class="signup-card">
+            <div class="card-header">
+                <h2>Sign Up</h2>
+                <p>Enter details to create your account</p>
+            </div>
+
+            <form class="form" action="/submit" method="post">
+                <div class="form-group">
+                    <label for="name">Your name</label>
+                    <input type="text" id="name" name="name" placeholder="Enter your name" required>
+                </div>
+
+                <div class="form-group">
+                    <label for="phone">Phone number</label>
+                    <input type="tel" id="phone" name="phone" placeholder="Enter your phone number">
+                </div>
+
+                <div class="form-group">
+                    <label for="dulux-account">Dulux account</label>
+                    <input type="text" id="dulux-account" name="dulux_account" placeholder="Enter your Dulux account">
+                </div>
+
+                <button type="submit" class="btn-submit">Sign up</button>
+            </form>
+
+            <div class="card-footer">
+                <p>Already have an account? <a href="#">Sign in</a></p>
+            </div>
+        </div>
+
+    </div>
+
+</body>
+</html>
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diff --git a/style.css b/style.css
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--- /dev/null
+++ b/style.css
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+body {
+    font-family: Arial, sans-serif;
+    background-image: url('background.png'); 
+    background-size: cover;
+    background-position: center;
+    background-repeat: no-repeat;
+    
+    min-height: 100vh;
+    display: flex;
+    justify-content: center;
+}
+
+.main-container {
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    width: 100%;
+    padding: 20px;
+    gap: 150px;
+}
+
+.welcome-section h1 {
+    font-size: 2rem;
+    font-weight: 700;
+    margin-bottom: 15px;
+    color: #476d78;
+}
+
+.divider {
+    width: 100%;
+    height: 2px;
+    background-color: #476d78;
+    margin-bottom: 20px;
+    opacity: 0.6;
+}
+
+.welcome-section p {
+    font-size: 1rem;
+    line-height: 1.6;
+    color: #476d78;
+}
+
+.signup-card {
+    flex: 0 0 400px;
+    background-color: #ffffff;
+    padding: 40px;
+    border-radius: 8px;
+    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1); /* 柔和的阴影 */
+}
+
+.card-header {
+    text-align: center;
+    margin-bottom: 30px;
+}
+
+.card-header h2 {
+    font-size: 1.5rem;
+    color: #476d78;
+    margin-bottom: 10px;
+}
+
+.card-header p {
+    color: #476d78;
+    font-size: 0.9rem;
+}
+
+.form-group {
+    margin-bottom: 20px;
+}
+
+.form-group label {
+    display: block;
+    font-size: 0.9rem;
+    color: #476d78;
+    margin-bottom: 8px;
+    font-weight: 500;
+}
+
+.form-group input {
+    width: 100%;
+    padding: 12px 15px;
+    font-size: 0.9rem;
+    border: 1px solid #999a9a;
+    border-radius: 4px;
+    box-sizing: border-box;
+}
+
+.form-group input::placeholder {
+    color: #aeabab;
+}
+
+.form-group input:focus {
+    border-color: #007ba8;
+}
+
+.btn-submit {
+    width: 100%;
+    padding: 12px;
+    background-color: #006c93;
+    color: white;
+    border: none;
+    border-radius: 4px;
+    font-size: 1rem;
+    font-weight: 500;
+    cursor: pointer;
+    margin-top: 10px;
+}
+
+.btn-submit:hover {
+    background-color: #005a7d;
+}
+
+.card-footer {
+    text-align: center;
+    margin-top: 20px;
+    font-size: 0.9rem;
+    color: #434343;
+}
+
+.card-footer a {
+    color: #077198;
+    text-decoration: none;
+    font-weight: 500;
+}
+
+.card-footer a:hover {
+    text-decoration: underline;
+}
