<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>