學生感想

本人之前從未練過彈琴，4weeks已經成功彈得歌曲....努力成果-.~...雖然彈得不算很好^^但心內覺得興奮（^o^）(在youtube: simpsonlo1 遇見....彈琴4week yeah^O^
有時間可一看架....

Scroll Down

This example demonstrates how to create a "scroll to top" button that becomes visible when the user starts to scroll the page.