base_styles.css in CSS

A complete base stylesheet: reset, tokens, typography and form defaults.

/* Base stylesheet: reset, tokens, elements. */
@layer reset, tokens, base;

@layer reset {
  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }

  body,
  h1,
  h2,
  h3,
  p,
  figure {
    margin: 0;
  }

  img,
  svg,
  video {
    display: block;
    max-width: 100%;
  }

  button,
  input,
  select,
  textarea {
    font: inherit;
    color: inherit;
  }
}

@layer tokens {
  :root {
    --bg: #ffffff;
    --surface: #f4f4f6;
    --fg: #14161c;
    --muted: #5b6070;
    --accent: #7c5cff;
    --danger: #e5484d;
    --radius: 0.5rem;
    --pad: 1rem;
    --measure: 68ch;
  }

  @media (prefers-color-scheme: dark) {
    :root {
      --bg: #0b0c10;
      --surface: #14161c;
      --fg: #e8e8ea;
      --muted: #9aa0b0;
    }
  }
}

@layer base {
  body {
    background: var(--bg);
    color: var(--fg);
    font-family: system-ui, sans-serif;
    line-height: 1.5;
  }

  h1 {
    font-size: clamp(1.75rem, 1.2rem + 2.5vw, 3rem);
    line-height: 1.1;
    text-wrap: balance;
  }

  p {
    max-width: var(--measure);
  }

  a {
    color: var(--accent);
    text-underline-offset: 0.2em;
  }

  :focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }
}

How it works

1. Layers keep the reset from fighting the component rules.
2. Every color and radius comes from a custom property.
3. The dark theme is a variable swap, not a second stylesheet.

Keywords and builtins used here

• background
• ch
• clamp
• color
• display
• em
• font
• layer
• margin
• media
• outline
• px
• rem
• var
• vw

The run, in numbers

Lines

86

Characters to type

996

Tokens

260

Three-star pace

80 tpm

At the three-star pace of 80 tokens a minute, this run takes about 195 seconds.

Type this snippet

Step 1 of 1 in Encore, step 26 of 26 in Selectors & the box model.

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