(max-width: 768px) {
  .footer-content { 
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-about {
    grid-column: 1 / span 3;
  }
}


(min-width: 640px) {
  .contained {
    max-width: 640px;
  }
}

(min-width: 768px) {
  .contained {
    max-width: 768px;
  }
  
  .article.article-md h2 {
    font-size: 24px;
  }
  .article.article-lg h2 {
    font-size: 36px;
  }

  .grid {
    grid-template-columns: 1fr 1fr;
  }

  .grid-main-article { 
    grid-column: 1 / span 2;
  }

  .spaced.spaced {
    flex-direction: row;
  }
}

(min-width: 1024px) {
  .header-top { 
    margin-bottom: 20px;
  }
  .contained {
    max-width: 1024px;
  }

  .section h2 {
    font-size: 60px;
  }
  
  .article.article-md h2 {
    font-size: 28px;
  }
  .article.article-lg h2 {
    font-size: 40px;
  }

  .heading-button {
    width: 50px;
    height: 50px;
  }
  .heading-button-arrow {
    font-size: 28px;
    padding: 12px 8px
  }
}

(min-width: 1280px) {
  .contained {
    max-width: 1280px;
  }
  .grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

(min-width: 1536px) {
  .contained {
    max-width: 1536px;
  }
  .tutorial-card-title {
    font-size: 44px;
  }

  .tutorial-card-title a {
    line-height: 1.1825em;
  }
}

Building Blocks | Learning isn't linear — it's about accumulating tools that let you build increasingly complex structures. These tutorials start small but stack meaningfully, each one adding to your repertoire of problem-solving patterns. They're designed to grow with you.

Building Blocks

Tutorials

The Logical Beginning

Just the Facts ...

Logic Programming Rules!

Variables

Numbers and Math

Rules Part II

Constants

Choice Rules

Recursive Rules

Circular Dependencies

Conditional Literals

Constraints

Counting Things

Default Negation

Classical Negation

AI Planning

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