functions.php

<?php 
// Loading the Components
//Search
add_amp_theme_support('AMP-search');
//Logo
add_amp_theme_support('AMP-logo');
//Social Icons
add_amp_theme_support('AMP-social-icons');
//Menu
add_amp_theme_support('AMP-menu');
//Call Now
add_amp_theme_support('AMP-call-now');
//Sidebar
add_amp_theme_support('AMP-sidebar');
// Featured Image
add_amp_theme_support('AMP-featured-image');
//Author box
add_amp_theme_support('AMP-author-box');
//Loop
add_amp_theme_support('AMP-loop');
// Categories and Tags list
add_amp_theme_support('AMP-categories-tags');
// Comments
add_amp_theme_support('AMP-comments');
//Post Navigation
add_amp_theme_support('AMP-post-navigation');
// Related Posts
add_amp_theme_support('AMP-related-posts');
// Post Pagination
add_amp_theme_support('AMP-post-pagination');

amp_font('https://fonts.googleapis.com/css?family=Source+Serif+Pro:400,600|Source+Sans+Pro:400,700');