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SASS Expert Training - Optimize Advanced CSS in 4 Days

Course created on July 27, 2026Updated on October 5, 2026

On quote$4,620

4 days
Onsite
10 people max.

Request a quote See the program

Ref: HCO618

10 people max.

On quote$4,620

In-company rate: on quotefrom $7,865 for the whole team

On-site and certification exam on quote

4 days

Onsite

Don't let this gap widen

Why this program matters

Without expert SASS mastery, your CSS styles explode in maintenance: +40% time lost on refactoring, inheritance bugs costing 20h/week to a senior dev, slow sites penalized -30% Google traffic (Core Web Vitals), teams blocked by spaghetti code, competition outpaced by modular frameworks.
Risk 15k€/year in lost productivity?
Invest 4 days to divide your styling deadlines by 3, scale without limits, and boost project ROI to 200%.
Don't let obsolete CSS sabotage your critical deadlines.

Trusted by — schools, companies and industrial groups

25,720 programs · 25 countries

Every program built with a dedicated engineer

Companies: Aptar, ArcelorMittal, Equans, EDF, Ubisoft and Microsoft.

Learning objectives

Master advanced parametric and nested mixins
Implement complex loops, conditions, and maps
Create custom functions for automations
Apply scalable 7-1 pattern architecture
Optimize performance via @extend and partial imports
Integrate SASS with modern React/Vue frameworks
Develop reusable modular themes

Program

Module 1Advanced Mixins and Variables: VSCode Tools, parametric mixins exercises (deliverables: mixins library)

Dive into nested mixins and dynamic maps with VSCode and Dart Sass, complete exercises on conditional variables, build a reusable mixins library for flexible grids, test live on real projects, gain immediate productivity and desire to scale your CSS styles.

Module 2Loops and Controls: @each/@for methods, concrete animation cases (deliverables: CSS generator)

Explore @each and @for loops to generate variants, apply @if/@else conditions on dark/light themes, develop practical scalable animation exercises, integrate maps for advanced color palettes, produce an automated CSS generator, transform your workflows into a performant style machine.

Module 3Functions and 7-1 Architecture: PostCSS Tools, modular pattern (deliverables: structured 7-1 project)

Create custom mathematical functions for precise spacing, structure in 7-1 pattern with abstracts and utils, use PostCSS for debugging, complete concrete e-commerce app cases, generate a complete modular project, master scalability for agile teams and boost your architectural expertise.

Module 4Optimization and Integrations: @extend, Webpack, final project (deliverables: optimized bundle)

Optimize via selective @extend and conditional imports, integrate SASS into Webpack/Vite for React/Vue, analyze performance with Lighthouse, develop final responsive themed interface project, export ultra-light bundle, leave with production-ready skills and technical leadership.

Evaluation method

Daily interactive quizzes
Real case studies
Graded final project
Personalized feedback

Learning method

80% intensive practice
Concrete exercises
Business cases
Unlimited live support

Methods, materials and delivery

The SASS Expert Training - Optimize Advanced CSS in 4 Days program is delivered onsite or remote (blended-learning, virtual classroom, remote presence). At Learni, an industry-certified training organization, every program is built to maximize skills acquisition regardless of the chosen format.

The trainer alternates between demonstrative, interrogative and active methods (through hands-on labs and/or scenarios). This pedagogical approach guarantees concrete learning that's immediately applicable at work.

Equipment required

For the smooth delivery of the SASS Expert Training - Optimize Advanced CSS in 4 Days program, the following equipment is required:

Mac or PC computers, high-speed fiber internet, whiteboard or flipchart, projector or interactive touch screen (for remote sessions)
Training environments installed on workstations or accessible online
Course materials, hands-on exercises and complementary resources
Post-training access to materials and educational resources

For intra-company training on a site outside Learni, the client commits to providing all required teaching materials (computers, internet, etc.) for the smooth delivery of the program in line with the prerequisites in the communicated program.

* contact us for remote delivery feasibility** ratio varies depending on the program

Skills assessment methods

Assessment of skills acquired during the SASS Expert Training - Optimize Advanced CSS in 4 Days program is performed through:

During training: case studies, hands-on labs and professional scenarios
End of training: self-assessment questionnaire and skills evaluation by the trainer
After training: completion certificate detailing acquired skills

Program accessibility

Learni is committed to making its programs accessible. All our programs are accessible to people with disabilities. Our teams are available to adapt the pedagogical methods to your specific needs. Please contact us for any adjustment request.

Enrollment terms and lead times

Registration is possible up to 48 business hours before the start of training. All our programs are built for corporate L&D budgets and delivered onsite or remotely.

The Learni story

Founded by engineers and learning experts, Learni's mission is to make high-impact tech training accessible to teams everywhere. We work remotely with organizations across the US and Canada, in your time zone, to help teams upskill fast.

Our method

Training quality, guaranteed at every step

Before, during, after: we frame the brief, introduce the trainer, tailor the content and measure impact. You stay in control from kickoff to wrap-up.

Step 1

Rigorous trainer selection

Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.

Triple validation: technical, pedagogical, sectoral.
Minimum rating 4.8/5 over the last 12 sessions.

Step 2

You meet the trainer beforehand

30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.

Live briefing on goals and team context.
Veto right — we swap the trainer for free if needed.

Step 3

Content tailored to your context

No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.

Hands-on cases drawn from your stack and projects.
Program co-written then validated by your team.

Step 4

Continuous quality follow-up

Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.

NPS, knowledge quizzes and skills self-assessment.
Satisfaction guarantee: fully satisfied or free rework.

A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.

A child walking to school with a backpack

Our social commitment

A school kit donated to a child for every training booked

To fight inequalities in access to education, Learni donates a complete school kit to a child in need for every training booked. You build your skills, a child heads back to school.

Backpack, notebooks and essential supplies
Distributed through our partner charities
Included, at no extra cost to you

Enroll and offer a kit

FAQ

Frequently asked questions

Which tools are used in SASS Expert Training training?+

Hands-on work runs on deliverables: mixins library, deliverables: CSS generator, deliverables: structured 7-1 project and deliverables: optimized bundle. Those tools come from the SASS Expert Training program itself, delivered on site over 4 days, so participants practise on the stack they will use at work.

What can participants do after SASS Expert Training training?+

They can master advanced parametric and nested mixins, implement complex loops, conditions, and maps and create custom functions for automations. Those are the stated objectives of the SASS Expert Training program at Expert level, checked by the end-of-session assessment.

What does the SASS Expert Training program cover, day by day?+

Day 1: Advanced Mixins and Variables: VSCode Tools, parametric mixins exercises (deliverables: mixins library). Day 2: Loops and Controls: @each/@for methods, concrete animation cases (deliverables: CSS generator). Day 3: Functions and 7-1 Architecture: PostCSS Tools, modular pattern (deliverables: structured 7-1 project). Day 4: Optimization and Integrations: @extend, Webpack, final project (deliverables: optimized bundle). The SASS Expert Training program runs over 4 days, delivered on site.

How is SASS Expert Training training assessed?+

Assessment relies on daily interactive quizzes, real case studies and graded final project. Learni issues a completion certificate together with the individual assessment report at the end of the SASS Expert Training program, which an L&D team can file as evidence.

How much does SASS Expert Training training cost per participant?+

SASS Expert Training training is priced on quote. The amount depends on headcount, format and how far the syllabus is tailored to your team. A detailed quote is sent within one business day, and team pricing covers the whole group from the second participant.

How long does SASS Expert Training training take?+

4 days, available live online (US time zones) or on-site at your offices. Half-day tracks spread over several weeks are possible so the team stays operational.

Who pays for SASS Expert Training training?+

Most US teams pay directly through their company L&D or training budget. Learni invoices in US dollars and accepts bank transfer (ACH/wire) or card, with volume pricing for teams. A purchase order is welcome.

What do participants need to know before SASS Expert Training training?+

Expert mastery of CSS3, experience with preprocessors like LESS, build tools (Webpack, Gulp).

Is a certificate issued after SASS Expert Training training?+

Yes. A Learni completion certificate is issued, along with the individual evaluation report. Learni is a certified training provider and prepares for third-party certifications, but does not award them itself.

Your professional training, anywhere