*:first-child { margin-top: 0 !important; } body>*:last-child { margin-bottom: 0 !important; } ...
:first child margin top: important body :last child margin bottom: important BLOCKS p, blockquote, ul, ol, dl, table, pre margin: px HEADERS h , h , h , h , h , h margin: px px padding: font weight: ...
2017-10-29 02:01 0 2496 推薦指數:
*:first-child { margin-top: 0 !important; } body>*:last-child { margin-bottom: 0 !important; } ...
*:first-child { margin-top: 0 !important; } body > *:last-child { margin-bottom: 0 !important; ...
*:first-child { margin-top: 0 !important; } body>*:last-child { margin-bottom: 0 !important; } ...
*:first-child { margin-top: 0 !important; } body > *:last-child { margin-bottom: 0 !important; ...
*:first-child { margin-top: 0 !important; } body > *:last-child { margin-bottom: 0 !important; ...
*:first-child { margin-top: 0 !important; } body > *:last-child { margin-bottom: 0 !important; ...
*:first-child { margin-top: 0 !important; } body > *:last-child { margin-bottom: 0 !important; ...
談論進程上下文 、中斷上下文 、 原子上下文之前,有必要討論下兩個概念: a -- 上下文 上下文是從英文context翻譯過來,指的是一種環境。相對於進程而言,就是進程執行時的環境; 具體來說就是各個變量和數據,包括所有的寄存器變量、進程打開的文件、內存信息 ...