WEB PLATFORM / FIELD NOTES 001

Small experiments.
Native by design.

A local workspace for testing browser standards, expressive CSS, and edge-ready TypeScript patterns.

01 / COLOR SYSTEM

A theme tied to time

Choose a date

SEASONAL PALETTE —

Show seasonal theme code

const palettes = {
  spring: "oklch(72% 0.16 151)",
  summer: "oklch(78% 0.15 75)",
  autumn: "oklch(73% 0.17 38)",
  winter: "oklch(75% 0.14 224)",
};

const month = new Date().getUTCMonth();
const season =
  month >= 2 && month <= 4 ? "spring" :
  month >= 5 && month <= 7 ? "summer" :
  month >= 8 && month <= 10 ? "autumn" : "winter";
document.documentElement.style.setProperty("--theme-accent", palettes[season]);

02 / RESPONSIVE LAYOUT

Container-aware cards

LAYOUT / 001

Container queries

This card responds to the width of its parent, not the viewport.

@container

LAYOUT / 002

Subgrid alignment

Shared tracks keep headings, descriptions, and details in line.

subgrid

            
              Show container query code
              .card-list {
  container-type: inline-size;
}

.card {
  display: grid;
  grid-template-columns: 8rem 1fr;
}

@container (max-width: 32rem) {
  .card {
    grid-template-columns: 1fr;
  }
}
            
            
              Show subgrid code
              .cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-template-rows: auto auto auto;
}

.card {
  display: grid;
  grid-row: span 3;
  grid-template-rows: subgrid;
}
            
          

03 / HTML INTERACTION

A native modal

Let the browser do the work.

The dialog provides focus management, a modal backdrop, and Escape handling through the native element.

Show native dialog code

<dialog id="notice">
  <p>Your changes are saved.</p>
  <form method="dialog">
    <button>Close</button>
  </form>
</dialog>

<button id="open-notice">Open dialog</button>
<script>
  document.querySelector("#open-notice")
    .addEventListener("click", () => {
      document.querySelector("#notice").showModal();
    });
</script>

04 / RELATIONAL SELECTORS

Validation with :has()

Show validation with :has() code

<label class="field">
  Email
  <input type="email" required>
</label>

.field:has(input:user-invalid) {
  color: crimson;
}

.field:has(input:user-valid) {
  color: seagreen;
}

05 / COLOR INSPECTION

Active design tokens

Show CSS design token code

:root {
  --accent: oklch(72% 0.16 151);
  --surface: oklch(20% 0.02 255);
}

.button {
  background: var(--accent);
  color: var(--surface);
}

Small experiments.Native by design.