TT-034 · cert-steel
Steel Engineer
스틸 기사 · Certification & Exam Prep
Steel gray and blue with condensed numerals. Prep for engineering licenses heavy with formulas and units.
- Cover
- Chapter opener
- Body (example)
- How to use
Previews come from the same sample manuscript (“[Example] Fundamentals of Data Science”) built in this style.

About this style
| Family | Certification & Exam Prep — Past-paper and key-point review books. Strong contrast, bold numbers, fast scanning. |
|---|---|
| Best for | Engineer and technician licensing exams |
| Use cases | Exam prep & past papers |
| Mood | ModernCalmBold |
| Formality · Age group | Balanced · Adult |
Color palette
- accent
#495057 - accent 2
#339AF0 - tint
#EDEEEE - paper
#F3F9FE - ink
#161616 - body text
#2B2B2B - muted text
#5E5E5E - rule
#CACCD1 - dark surface
#191B20 - warning
#B42318
Fonts
| Font | Role | License |
|---|---|---|
| Libre Franklin | Body | SIL Open Font License 1.1 |
| Manrope | Headings | SIL Open Font License 1.1 |
| Inter | Labels & chapter labels | SIL Open Font License 1.1 |
| Barlow Condensed | Chapter numbers & folios | SIL Open Font License 1.1 |
| Space Mono | Code | SIL Open Font License 1.1 |
| Pretendard | Fallback | SIL Open Font License 1.1 |
| IBM Plex Serif | Math variables (italic) | SIL Open Font License 1.1 |
Building blocks
| Chapter opener | Big number |
|---|---|
| Element boxes | Ruled |
| Tables | Zebra stripes |
| Running head | Boxed folio |
| Cover | White cover |
Format and build checks
188 × 257 mm · type area 146 × 209 mm · body 9.5pt/16pt
Margins top 22 · bottom 26 · inside 24 · outside 18 mm
All build checks passedMin. contrast 5.17:1TOC 20/20Overflow: 0Fonts embedded · OFL ✓Print preflight ✓
Textbook pack (English edition)
A new-book pack (.zip) in this style: theme CSS, fonts (OFL), build and check tools, an example chapter, an empty chapter skeleton and a sample PDF. 188 × 257 mm, PDF/X-4 and CMYK for offset print.
Pack size 9.7 MB · version 2026.10.08
KDP products in this style
No KDP product uses this style yet. Styles with the most requests get products first.
Start a new book in this style (free form)
- Get the textbook pack and unzip it → folder
book-cert-steel-en. - Fill in the form and select Download files (.zip). A custom
book.jsonand one skeleton file per chapter are generated in this browser (nothing is uploaded, free). - Unzip the download over the pack folder, then run
build.bat(or./build.sh).
Preview book.json
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