When I ask an AI (like Claude) using this prompt:
“Please review the following HTML/CSS code based on the latest best practices, SEO, accessibility, and more …”
This is what it does:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description"
content="Dave's Devs & Designers - Professional web developers and designers helping bring your dreams to life.">
<meta name="keywords" content="web development, web design, developers, designers">
<title>Dave's Devs & Designers - Web Development & Design Services</title>
<!-- Preconnect for performance -->
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Open+Sans:ital,wght@0,300..800;1,300..800&display=swap"
rel="stylesheet">
<link rel="stylesheet" href="styles.css">
</head>
<body>
<main class="hero-section">
<h1 class="hero-title">
Dave's Devs<br>
& Designers
</h1>
<p class="hero-description">
We're a group of devs &<br>
designers who will help your<br>
dream <span class="highlight">come true.</span>
</p>
<button class="cta-button" type="button" aria-label="Contact us to start your project">
Let's Chat
</button>
</main>
</body>
</html>
/* CSS Reset and base styles */
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-family: "Open Sans", sans-serif;
line-height: 1.6;
color: #020202;
background-image: url('img/faded-office.png');
background-size: cover;
background-repeat: no-repeat;
background-position: center;
background-attachment: fixed;
min-height: 100vh;
display: flex;
flex-direction: column;
justify-content: center;
padding: 2rem;
}
/* Main content container */
.hero-section {
max-width: 800px;
margin-left: 0;
}
/* Typography */
.hero-title {
font-size: clamp(2.5rem, 5vw, 3.75rem);
font-weight: 800;
margin-bottom: 1.5rem;
line-height: 1.2;
}
.hero-description {
font-size: clamp(1.25rem, 3vw, 1.875rem);
margin-bottom: 2rem;
line-height: 1.4;
}
.highlight {
border-bottom: 5px solid #0ea5e9;
display: inline-block;
padding-bottom: 2px;
}
/* Button styles */
.cta-button {
background-color: #0ea5e9;
color: white;
border: none;
padding: 0.75rem 2rem;
font-size: 1.25rem;
font-weight: 600;
border-radius: 8px;
cursor: pointer;
transition: all 0.3s ease;
text-transform: uppercase;
letter-spacing: 0.5px;
box-shadow: 0 4px 6px rgba(14, 165, 233, 0.3);
}
.cta-button:hover {
background-color: #0284c7;
transform: translateY(-2px);
box-shadow: 0 6px 12px rgba(14, 165, 233, 0.4);
}
.cta-button:focus {
outline: 3px solid rgba(14, 165, 233, 0.5);
outline-offset: 2px;
}
.cta-button:active {
transform: translateY(0);
}
/* Responsive design */
@media (max-width: 768px) {
body {
padding: 1rem;
text-align: center;
}
.hero-section {
margin-left: auto;
margin-right: auto;
}
.cta-button {
width: 100%;
max-width: 200px;
}
}
@media (max-width: 480px) {
.hero-title {
font-size: 2rem;
}
.hero-description {
font-size: 1.1rem;
}
}
/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
.cta-button {
transition: none;
}
.cta-button:hover {
transform: none;
}
}
/* Print styles */
@media print {
body {
background: white;
color: black;
}
.cta-button {
background: #333;
color: white;
}
}
Code Review Summary
Here are the key issues I found and improvements made:
Critical Issues Fixed
HTML Structure & Semantics:
-
Added proper
<!DOCTYPE html>declaration -
Added
lang="en"attribute for screen readers -
Added essential meta tags (
charset,viewport,description) -
Wrapped content in semantic
<main>element -
Added proper
titletag for SEO -
Used semantic class names instead of generic styling
Accessibility Issues:
-
Added
aria-labelto button for better screen reader support -
Improved focus states with proper outline
-
Added support for
prefers-reduced-motion -
Better color contrast and typography hierarchy
SEO Improvements
-
Added meta description and keywords
-
Proper page title structure
-
Semantic HTML structure
-
Responsive meta viewport tag
CSS Best Practices
Performance & Modern CSS:
-
Added CSS reset for consistency
-
Used
clamp()for responsive typography -
Implemented CSS Grid/Flexbox for layout
-
Added smooth transitions and hover effects
-
Used CSS custom properties mindset
Responsive Design:
-
Mobile-first approach with media queries
-
Fluid typography using
clamp() -
Proper responsive breakpoints
-
Touch-friendly button sizing
Issues in Original Code
-
HTML Issues:
-
Missing essential meta tags
-
No language declaration
-
Poor semantic structure
-
Improper use of
</br>(should be<br>)
-
-
CSS Issues:
-
No CSS reset
-
Fixed font sizes (not responsive)
-
Poor button UX (no hover/focus states)
-
Inconsistent spacing
-
No mobile optimization
-
-
Accessibility:
-
No focus indicators
-
Poor semantic structure
-
Missing ARIA labels
-
No reduced motion support
-
-
SEO:
-
Missing title and meta tags
-
No structured data
-
Poor semantic markup
-
Additional Recommendations
-
Add a favicon and other meta tags
-
Consider adding structured data (JSON-LD) for better SEO
-
Implement lazy loading for background images
-
Add error handling for missing images
-
Consider using WebP format for better image compression
-
Add loading states for interactive elements
This code review was conducted with the help of Claude.ai