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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少し短いコードになりましたが、まだ改善できそうです。図8.39 のよ
うに初期状態でアバターが円の中央に置かれているなら、先頭の 2 つの
translateY()は削除できます。これらのトランスフォーム は 、アバ
ターを中央に配置するためのものだからです。削除の結果、コードは次の
ようになります。
少なくとも今日では、これが行える変更のすべてです。最もDRY なわけ
ではありませんが、かなり短いコードにできました。繰り返しは最小限で
あり、余分なHTMLの要素も必要ありません。パスの半径を繰り返し指定
しなくても済むような完全にDRY なコードにするには、プリプロセッサを
利用する必要があります。このためのコードについては、読者への課題と
します。
▶ PLAY!
play.csssecrets.io/circular
.avatar{animation:spin3sinfinitelinear;}
@keyframesspin{
from{
transform:rotate(0turn)
translateY(‐150px)translateY(50%)
rotate(1turn);
}
to{
transform:rotate(1turn)
translateY(‐150px)translateY(50%)
r
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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.