Bootstrap does not support Amazon Silk

​I have an ASP.Net Core app that I often use on various devices as well as my Kindle Fire. The site utilizes Bootstrap for its look and feel to make it responsive to smaller form factors such as mobile devices. When viewing the site in the Amazon Fire's Silk browser l see that the navigation menu is not collapsed and displaying the traditional "hamburger" as a button:

Instead, the full navigation menu is displayed, obscuring the top part of the page. After during some searching, alas the Silk browser is not supported. From http://v4-alpha.getbootstrap.com/getting-started/browsers-devices/, "Generally speaking, Bootstrap supports the latest versions of each major platform’s default browsers. Note that proxy browsers (such as Opera Mini, Opera Mobile’s Turbo mode, UC Browser Mini, Amazon Silk) are not supported."