Missing reponsive for website in Iphone6s and safari 5.1.7
<p>My site have error responsive when i check in Iphone6s and Safari 5.1.7.Another browser it ok.</p>

<p>Link: <a href="http://www.aste.com.sg" rel="nofollow noreferrer">http://www.aste.com.sg</a></p>

<p><a href="https://i.stack.imgur.com/tbD0i.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/tbD0i.png" alt="Bug here"></a></p>