How to download attachment in AT&T?

I am unable to download the attachment of mail.
Date: Fri-Jan-27-2017-
Open the email. Select the attachment and then select Save or Download (depending on your email program or browser) to save to your computer. While viewing your email through, you can also view your attachments before downloading them by selecting Show Images. .
[d] By: mrharkamal53
Date: Sat-Feb-11-2017
What is 1 + 100

Just Updated::