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Training Sass - Optimize CSS with Advanced Variables and Mixins

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

On quote$2,310

2 days
Onsite
10 people max.

Request a quote See the program

Ref: ABA798

10 people max.

On quote$2,310

In-company rate: on quotefrom $4,190 for the whole team

On-site and certification exam on quote

2 days

Onsite

Don't let this gap widen

Why this program matters

Without Sass, your CSS remains verbose and repetitive, tripling maintenance errors according to Stack Overflow.
Lose 40% of development time on complex projects, like responsive sites where media queries pile up without logic.
Risk costly production bugs, with 25% of front-end devs stuck on plain CSS, per CSS-Tricks surveys.
Your code bloats to 2x the size, slowing mobile performance and SEO.
While competitors code 2x faster with Sass, stagnate professionally and miss freelance opportunities with +30% salary.
Invest 14 hours to halve your CSS time starting tomorrow.

Trusted by — schools, companies and industrial groups

25,718 programs · 25 countries

Every program built with a dedicated engineer

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

Learning objectives

Master variables and nesting to structure your Sass CSS
Create reusable mixins to accelerate development
Use functions and operators for dynamic calculations
Manage imports and partials to organize projects
Optimize with @extend and control directives
Compile and integrate Sass into professional workflows

Program

Module 1Sass Fundamentals: Variables, Nesting, Mixins (VS Code, Dart Sass, Practical Exercises)

Dive into Sass from the morning by installing Dart Sass and configuring VS Code with dedicated extensions, create your first variables to centralize colors and sizes, chain with nesting to intuitively embed selectors, then build basic mixins during exercises on a real e-commerce site, test compilation to optimized CSS, leave with a first functional deliverable that already boosts your productivity.

Module 2Advanced Sass: Functions, @extend, Project Integration (Sass CLI, Real Cases, Deliverables)

Move to custom functions for advanced calculations like adaptive rems, master @extend to reuse code without massive duplication, organize your partials and imports in a complete responsive project, apply loops and conditions on a real client portfolio via Sass CLI, integrate into a Gulp or Webpack workflow, end with a practical challenge and a compiled deliverable ready to deploy, transform your CSS habits today.

Evaluation method

Interactive quizzes at the end of each module
Graded practical exercises
Final project with personalized feedback

Learning method

Active pedagogy based on real web cases
Hands-on exercises with professional tools
Immediate feedback for rapid progress

Methods, materials and delivery

The Training Sass - Optimize CSS with Advanced Variables and Mixins 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 Training Sass - Optimize CSS with Advanced Variables and Mixins 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 Training Sass - Optimize CSS with Advanced Variables and Mixins 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 training?+

Hands-on work runs on VS Code, dart Sass, practical Exercises, sass CLI, real Cases and deliverables. Those tools come from the Sass program itself, delivered on site over 2 days, so participants practise on the stack they will use at work.

What can participants do after Sass training?+

They can master variables and nesting to structure your Sass CSS, create reusable mixins to accelerate development and use functions and operators for dynamic calculations. Those are the stated objectives of the Sass program at Intermediate level, checked by the end-of-session assessment.

What does the Sass program cover, day by day?+

Day 1: Sass Fundamentals: Variables, Nesting, Mixins (VS Code, Dart Sass, Practical Exercises). Day 2: Advanced Sass: Functions, @extend, Project Integration (Sass CLI, Real Cases, Deliverables). The Sass program runs over 2 days, delivered on site.

How is Sass training assessed?+

Assessment relies on interactive quizzes at the end of each module, graded practical exercises and final project with personalized feedback. Learni issues a completion certificate together with the individual assessment report at the end of the Sass program, which an L&D team can file as evidence.

How much does Sass training cost per participant?+

Sass 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 training take?+

2 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 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 training?+

Mastery of HTML5, advanced CSS3, use of an editor like VS Code.

Is a certificate issued after Sass 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