Dastra is a Retain The Construction Responsive Website Template. This website template is easy to install and customize and can be used for many different types of websites. Dastra is a Retain The Construction responsive website template. This website template is easy to install and customize and can be used for many different types of websites. It is a responsive template, which means it will resize beautifully to fit any device. It is a multipurpose website template, which means it can be used for many different types of websites.