可否有人幫我解釋一下？
我到現在還真的搞不懂自行設定中這兩個到底有啥不同？

設定後對網頁文字有啥影響....?

襯線這個問題...
記得之前有人回答過...
您可以在論壇內找看看...
或是參考以下的轉貼文章...
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Serif (襯線字體)
Tapered corners on the ends of the main stroke. Serifs originated with the chiseled guides made by ancient stonecutters as they lettered monuments. Some serif designs may also be traced back to characteristics of hand calligraphy. Note that serif type is typically thick and thin in stroke weight.
The etymology of "serif" is obscure, but in any case almost as recent as the face. The oldest citations in the Oxford English Dictionary are 1841 for sans serif, which the OED gives as sanserif, and 1830 for serif. Indeed, the OED speculates that serif was a back formation from sanserif. On the other hand, Webster's Third New International Dictionary traces serif to the Dutch schreef meaning "stroke", and ultimately through German schreiben and Latin scribere, both also meaning "to write".
The OED's earliest citation for grotesque in this sense is 1875, giving "stone-letter" as a synonym. It would seem to mean "out of the ordinary" in this usage, as in art grotesque usually means "elaborately decorated". Other synonyms include Doric and Gothic.


Sans serif font
Serif font
(Serifs highlighted)

Sans serif (無襯線字體)
From the French, meaning “without serif”. A typeface which has no serifs.Sans serif typefaces are typically uniform in stroke width.
(轉貼自http://www.sinica.edu.tw/~ctchang/slidemaker/css-course/all.htm)
或是更完整的內容在http://graphicdesign.sfcc.spokane.cc.wa.us/tutorials/process/type_basics/default.htm

個人偏好無襯線字體
畫面看起較清爽

我也喜歡無襯線字體
尤其是Arial這款

_________________
在靜謐的國度裡，擁抱微風－－抱風伴靜

製圖學的教授曾經提到過 serif 字體比較適合印刷品閱讀, san-serif 字體比較適合電腦上閱讀。

雖然我也這麼認為, 不過看網頁的話我還是比較注意配色。就算用好讀的字體, 如果跟背景顏色衝到或配起來很刺眼的話, 讀起來還是會很累。