Season 2, Episode 1: Quick CSS Q&A and Front‑End Career Tips
This episode of the Quick Q&A column answers common CSS questions—such as element‑specific property limits, the hyphens property, and Chrome’s minimum‑font‑size effect on rem units—while also offering practical career advice for aspiring front‑end developers.
Preface Magic Brother’s “Quick Q&A” column is relaunched for Season 2. Followers often leave questions or ask for advice, and many doubts are common. I thought compiling these Q&A would create more value. The purpose of the “Quick Q&A” column is to share insights; readers can submit questions via the “CSS Magic” WeChat public account.
Technical Q&A
Q (Lu Tong): Can all CSS be used on any HTML element?
A: In theory yes, but some properties do not work on special elements. For example, setting <html> with display:inline has no effect, and width/height on inline elements are also ignored.
Q (Zhang Jianhui): Why does the CSS hyphens property not create hyphenated line breaks?
A: Check whether the current browser supports hyphens and whether a vendor prefix is required; also try using longer words to see the effect.
Q (Hou Zhiqiang): I set the root font size to font-size: 62.5% (10 px) to convert a iPhone 6 @2x design into rem units, but Chrome 61 shows 5rem as 60 px instead of 50 px. Why?
A: An online demo is available at https://codepen.io/cssmagic/pen/VVEwEx. Chrome has a “minimum font size” setting, defaulting to 12px. Even though html {font-size: 62.5%} calculates 10 px, Chrome forces it to 12 px, so 5rem becomes 60 px. To avoid this, you can redefine 1rem to equal 50 px, eliminating the extra division step.
Career Development Advice
Q (Qianli): As a programming‑language beginner wanting to learn web front‑end, companies now require at least one back‑end language. Should I focus only on front‑end or learn both?
A: The “at least one back‑end language” requirement is relatively loose; employers mainly want better front‑back coordination. You should have a basic grasp of a back‑end language but allocate your effort proportionally.
Q (Rocken): I’m a freshman confused about learning methods. My lab teacher says books are useless and I should learn by doing projects, but I feel that won’t build a solid knowledge framework.
A: Combine both approaches: work on projects while learning, and study books systematically. The two methods complement each other and are not contradictory.
Follow‑up: Should I read many books or read deeply?
A: Do both. Skim several books first, then choose the most valuable ones for deeper, repeated reading.
Q (Abner): After solidifying my JS and CSS basics, I want to move toward Node.js and Vue but can’t find a clear learning path, and graduation is near.
A: Expanding to Node.js and Vue is a correct direction. Find relevant books and tutorials, design personal tasks to practice, and accumulate enough experience before job hunting.
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