在HTML对象上应用多个class Name
<!DOCTYPE html><html><head> <title>Applying multiple class names to an object in HTML</title> <style type="text/css"> .sty1 { font-size: 2em; } .sty2 { color: #f00; } </style></head><body> <div class="sty1">Big</div> <div class="sty2">Red</div> <div class="sty1 sty2">Big and red</div> </body></html>?