A font change can leave paragraphs feeling just as long or dense. Heading size, reading measure and line spacing do not follow from a font name alone. I reread the current bilingual body styles and the tool-oriented article CSS, then wrote a small module that connects those conditions.

Its values are a starting point for representative copy, not universal settings for every site. The implementation and samples separate the reading area, retain heading structure and provide material for examining Korean and English independently.

Identify the reading area before changing its font

A short hero heading and a long reading body do not need identical size and width. The current homepage uses a large opening title, while the journal separates the reading body from its contents navigation. I first identify which material is read at length and define the conditions for that area.

The tool-oriented article CSS also has separate body width, heading sizes and mobile rules. Entering the same font name does not establish those conditions. Font selection belongs alongside line measure, hierarchy and spacing.

Reading measure differs from the page width

A wide monitor does not require paragraphs to fill the entire page. Listings and images can use more space while long reading has its own maximum. The two inspected article layouts use a grid separating contents navigation from a bounded body column.

The module combines a font-relative measure, a rem maximum and the actual available space. A ch value is not a character count. Typeface, language and weight affect the resulting line. I use the settings as a starting point for representative text rather than one universal answer.

Heading scale and spacing show structure

Making every heading large can obscure which question is primary and which explanation belongs inside it. I connect the document title, section headings and body with distinct size and spacing, while keeping actual heading tags consistent with that relationship. Visual prominence and document structure need to agree.

The example headings vary between minimum and maximum sizes and use their own line height. Relative units allow body-size adjustment. Long headings can form multiple lines; spaces between meaningful words are not removed merely to make a title fit. That calls for reviewing copy and CSS separately.

Korean and English need text-specific review

Korean word boundaries and English long words or identifiers create different wrapping conditions. Current journal CSS also adjusts language and viewport-specific rules. This example retains Korean words while permitting long strings to wrap, and uses ordinary word flow for English.

A font lacking Korean glyphs can be supplemented by a fallback. Changing the family in this sample does not verify a font file’s inclusion or glyph coverage. A real site still needs its font assets, loading, fallback and representative titles and paragraphs in both languages reviewed.

Reusable reading CSS

The CSS below is an independent example written for this article. Apply it to a reading area and change its body-size and measure variables. It does not replace all typography in an existing website. The inspected distinction between body width and headings informs the new example’s conditions.

Available screen space constrains the width, and content determines height. Zoom and long identifiers belong among the representative inputs. Before evaluating a font change, inspect headings, paragraphs, links and code within the same reading area.

Explore the implementation

CSS · Font, measure and hierarchy in one reading area

.reading-sample {
  --copy-measure: 58ch;
  --copy-size: 1.0625rem;
  box-sizing: border-box;
  inline-size: min(100%, var(--copy-measure));
  max-inline-size: 46rem;
  margin-inline: auto;
  padding: clamp(1rem, 3vw, 2rem);
  font-family: system-ui, sans-serif;
  font-size: var(--copy-size);
  line-height: 1.85;
  color: #263b30;
  background: #fff;
  overflow-wrap: anywhere;
}
.reading-sample[lang="ko"] { word-break: keep-all; line-height: 1.95; }
.reading-sample[lang="en"] { word-break: normal; }
.reading-sample h1 { margin-block: 0 1em; font-size: clamp(1.6rem, 1.25rem + 1.3vw, 2.6rem); line-height: 1.4; letter-spacing: -.025em; }
.reading-sample h2 { margin-block: 1.8em .8em; font-size: clamp(1.2rem, 1.05rem + .6vw, 1.65rem); line-height: 1.5; }
.reading-sample p { margin-block: 0 1.1em; }
.reading-sample code { font-size: .9em; }
@media (max-width: 480px) { .reading-sample { padding: 1rem; } }

An executable sample with size and width controls

The sample was newly written without transferring a customer’s final copy. Change width, body size and font family to compare the same text. Each language page contains its own representative prose. These controls change only the sample’s CSS state.

Publication checks inspect the HTML block and script syntax, but no new desktop or mobile line-wrap measurement was performed. Perceived readability and zoom behavior across devices are not verified. I distinguish current source declarations, the new implementation and the actual reading review still required.