July 2016
Intermediate to advanced
384 pages
10h 11m
Japanese
Content preview from CSSシークレット ―47のテクニックでCSSを自在に操る
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知っておくべきポイント
基本的なCSSアニメーション、 P.336の「コマ送りのアニメーショ
ン」
課題
<blink>というタグがよく使われていたのを覚えているでしょうか。
このタグを使った点滅の表示は、 Web 文明を象徴しているようです。つ
つましく不器用に始まったかつての Web を思い出させてくれるだけでな
く、ベテラン Web 開発者の内輪ネタにもなっています。しかし、今日で
はこのタグは毛嫌いされています。構造とスタイルが分離されていない問
題もありますが、最大の理由は多用によって 1990 年代後半の Web が見る
に耐えないものになってしまったからです。このタグを定義した Lou
Montulliも、「 <blink>は、私がインターネットのために行ってきたこと
の中で最悪の失敗だ」と述べています。
<blink>がもたらした悪夢は消え去りましたが、点滅するアニメーシ
ョンがまだ必要になることもあります。奇妙に思えるかもしれませんが、
自分の中に秘められていた倒錯に目覚めたとでも思ってください。一方
で、点滅がユーザビリティを高めてくれるケースも確実にあります。
よくあるユーザーエクスペリエンスのパターンとして、 UI 上での変更
点を示したり、ページの中で現在のURL（#以降のID ）が指し示す部分を
強調したりするために2回か3 回点滅させる方法が考えられます。このよ
うな場合でも、4 回以上の点滅は望ましくありません。限定されたケース
ではあるのですが、点滅によって効果的にユーザーの注意 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.