<div class="mypro"> <img src="images/ex6_3_a1.png" alt="Linux title" /> <p>Linux 的吉祥物</p> </div> <div class="mypro"> <img src="images/ex6_3_a2.png" alt="GNU title" /> <p>GNU 自由軟體計畫的吉祥物</p> </div>