div { border: 1px solid black; padding: 5px; margin: 5px 30px; background-color: pink; } div:hover {outline: 10px dotted rgba(255,0,0,0.3);} .ex1:hover {outline-offset: 5px;} .ex2:hover {outline-offset: 15px;}
<!DOCTYPE html> <html lang="ko"> <head></head> <body> <p>요소에 마우스를 올리세요</p> <div class="ex1">outline-offset: 5px;</div> <div class="ex2">outline-offset: 15px;</div> </body> </html>