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moderncss.dev

https://moderncss.dev· First analyzed 29 May 2026· Updated 29 May 2026
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moderncss.dev
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Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

35.157.26.135

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS16509

Organization

AWS EC2 (eu-central-1)

Server

Netlify

Nameservers

dns2.p06.nsone.net.dns3.p06.nsone.net.dns4.p06.nsone.net.dns1.p06.nsone.net.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
406 ms10%
Speed Index
528 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
110 KB
11 requests
0–49
50–89
90–100

Architecture Stack

JAMstack
⚡ SSG
Frontend
Framework
Eleventy
Infrastructure
Platform
Netlify

Technology Stack

3 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Analytics

1
Plausible Analytics

Platforms

1
Netlify

SEO Analysis

B71/100
21
5
0
Meta Tags9/15
Content11/12
Headings8/8
Technical18/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile4/4
Indexability3/3
M
moderncss.devmoderncss.dev

Modern CSS Solutions

A series examining modern CSS solutions to problems Stephanie Eckles (@5t3ph), a seasoned frontend developer, has been solving for 15+ years.

Title Length20 chars

Recommended: 50-60 chars (~122px / 580px)

Description Length141 chars

Recommended: 120-160 chars

Issues (0)

    5 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    42 URLs

    robots.txt

    3 rules

    Local SEO

    Local Search Readiness

    3/100
    Poor
    1 14 2

    This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

    Sponsored

    AI & LLM Readiness

    D52/100
    Bot Access
    20/25
    Machine Read.
    16/25
    Schema Data
    0/25
    Citation
    16/25

    AI Bot Access

    14/14 accessible
    AI Search
    OAI-SearchBot
    PerplexityBot
    Claude-SearchBot
    Gemini-Deep-Research
    DuckAssistBot
    Training
    GPTBot
    ClaudeBot
    Google-Extended
    Meta-ExternalAgent
    Bytespiderinfo
    Amazonbot
    Applebot-Extended
    CCBotinfo
    Fetch
    ChatGPT-User

    Machine Readability

    llms.txt
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    blockquotesheader/footer
    Text ratio:28%
    Words:1,455
    Token eff.:Optimal
    Sections/1K:2.7
    Depth:2/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary30w
    Descriptive Headingsavg 3w
    Canonical URL
    Open Graph3/3
    Twitter Card1/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (7)
    AI readiness recommendation preview...
    Upgrade to view recommendations

    Sponsored

    Accessibility

    WCAG 2.1 Compliance

    Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.
    A
    85/100
    13
    Passed
    1
    Critical
    0
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    20/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    15/15
    Verifies form fields have labels, error messages are clear, and inputs are properly associated.
    Color & Contrast
    15/15
    Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.
    Keyboard & Focus
    9/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    6/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    1 recommendation
    • •Accessibility recommendation preview...
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    Carbon Footprint

    SWDM v4 · Eco-Score

    Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.
    79/100
    A+
    11 mg
    CO₂e / view
    110.3 KB
    Page Weight
    95%
    Cleaner Than
    New Visitor
    13 mg
    vs
    Returning (cached)
    6 mg
    Annual (10K/mo)
    1.3 kg
    Emission Segments
    Data Center
    <0.001 g
    Network
    3 mg
    Device
    7 mg
    Resource Breakdown
    Images
    24.1 KB
    CSS
    5.6 KB
    Fonts
    71.5 KB
    HTML
    9.0 KB
    Green Hosting Verified
    Amazon Web Services (AWS)
    Provider Match
    2 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    B

    Security Score

    76%Good
    Static / Informational

    HTTPS

    No WAF

    39d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    ECDSA (secp256r1) (256 bit)

    Signature

    ECDSA with SHA-384

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    09.04.2026

    Valid Until

    08.07.2026

    Subject Alternative Names (4)

    *.moderncss.dev*.stylestage.devmoderncss.devstylestage.dev

    SHA-256 Fingerprint

    AD:B0:A2:1B:10:27:D4:E1:91:C7:C7:BC:E5:0F:39:92:6B:84:DB:A5...

    Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    accept-ranges
    bytes
    age
    6373
    cache-control
    🟡 0s(public,max-age=0,must-revalidate)
    cache-status
    "Netlify Edge"; hit
    content-encoding
    ⚡ Brotli(br)
    content-length
    8947
    Good Warning Issue

    Email Infrastructure

    Google Workspace

    Score

    45

    SPF
    DKIM
    DMARC

    MX Records (5)

    alt1.aspmx.l.google.com
    alt3.aspmx.l.google.com
    alt2.aspmx.l.google.com
    aspmx.l.google.com

    +1 more

    Domain Information

    moderncss.dev

    DNSSEC
    Not Enabled

    Mobile Compatibility

    Viewport & Responsive Test

    Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.
    C
    63/100
    Mobile Friendly
    Viewport Meta
    The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.
    Responsive Design
    Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.
    Touch Icons
    Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.
    Readable Font Size
    Base font size should be at least 16px on mobile to ensure text is readable without zooming.
    Relative Units
    Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.
    No H-Scroll Risk
    No elements wider than the viewport that would cause horizontal scrolling on mobile devices.
    Tap Targets OK
    Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.
    No Fixed Widths
    No elements with fixed pixel widths that could overflow on smaller screens and break the layout.
    Viewport
    width=device-width, initial-scale=1
    2 recommendations
    • •Mobile compatibility recommendation preview...
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    Typography & Readability

    Kanit + system-ui

    WCAG Fail
    74/100
    Readability
    /30
    19/30

    17px · LH 1.75

    Hierarchy
    /20
    19/20

    3.81x ratio · ✓ H1→H6

    WCAG
    /25
    16/25

    1.71:1 min contrast

    Performance
    /25
    20/25

    2 fonts · 3 req

    Heading Font

    Kanit

    Sans64px

    Body Font

    system-ui

    Sans17px

    Contrast Ratio

    1.71:1

    48 issues

    Reading Comfort

    ~36 CPL

    Narrow lines
    64px
    h1
    48px
    h2
    34px
    h3
    17px
    p

    ✅ Excellent readability: 17px body text is ideal for all devices.

    ⚠️ Hard to read: Flesch score 42/100. Simplify sentences for wider reach.

    ❌ Low contrast: 48 elements fail WCAG AA (min 1.7:1). Increase text/background contrast.

    ✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

    ✅ Strong hierarchy: Headlines are 3.8x larger than body text.

    ✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

    Buy on MyFontsFluid Type (rem)Flesch 43

    Color Palette

    5 unique colors
    Dark
    #28272c
    Other· 84.9%
    #6f5d7c
    Primary· 4.4%
    #3c3545
    Secondary· 4.1%
    #9b86b0
    Secondary· 3.6%
    #1a171e
    Secondary· 2.9%

    Business & Marketing Stack

    2 Tools Detected

    Growing

    Behavior Analytics

    2
    PlausibleSMB
    Google AnalyticsFree

    User behavior and product analytics

    1

    Categories

    2

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Ad Networks

    Carbon Ads

    Sponsored

    Scripts & Styles

    3 Resources

    2
    Scripts
    1
    Styles
    2
    Async
    1
    Defer

    Top Script Sources

    plausible.io(1)cdn.carbonads.com(1)

    Website Identity

    moderncss.dev

    Location detected: 🇩🇪 Germanyvia ip
    📧 Google Workspaceen

    Social Profiles

    YouTubeGitHub

    Sponsored

    Last analyzed: 29 May 2026 at 17:19

    Historical Analysis & Change Tracking

    moderncss.dev Technology Stack - Built With Tailwind CSS, Plausible Analytics, Netlify | StackOptic | StackOptic