Adaptive page layout from PSD

We need a web layout. You need a layout with three-page psd files, integrate with Bitrix Small Business. The layout should be adaptive (to ensure the correct display of the site on various devices connected to the Internet and dynamically adapt to the specified sizes of the browser window), cross-browser (to display and work in all popular browsers identically), valid (no errors on the pages of the site when checking in the service 文本隐藏) and using the Bootstrap 3 framework (html5, csss3, etc.).

TECH.Task attached by file