CSS3包含選擇器與類選擇器
阿新 • • 發佈：2018-12-26
<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title></title> <style type="text/css"> .parent { border: 1px solid red; height: 60px; margin: 5px; } .son { border: 1px solid red; height: 20px; } /*注意.之前沒有空格*/ div.abc { background-color: green; } /*注意.之前有空格*/ div .abc { background-color: yellow; } </style> </head> <body> <div class="parent"> <div class="abc son"></div> <div class="son"></div> </div> <div class="abc parent"></div> </body> </html>