Help me I cannot link my font-awesome to my WordPress Theme. I have my font-awesome folder already in my project

My Path: C:\Users…….\Desktop……\coding\font-awesome-4.7.0\css

my header code:


<div id="slideout-menu">     <ul>         <li>             <a href="<?php echo site_url(''); ?>">Home</a>         </li>         <li>             <a href="<?php echo site_url('/blog'); ?>">Blog</a>         </li>         <li>             <a href="<?php echo site_url('/projects'); ?>">Projects</a>         </li>         <li>             <a href="<?php echo site_url('/about'); ?>">About</a>         </li>         <li>               <input type="text" placeholder="Search Here">         </li>     </ul> </div>  <nav>     <div id="logo-img">         <a href="#">             <img src="<?php echo get_template_directory_uri(); ?>/img/logo.png" alt="GTCoding Logo">          </a>     </div>     <div id="menu-icon">         <i class="fa fa-bars"></i>     </div>         <ul>             <li>                 <a href="<?php echo site_url(''); ?>"                     <?php if(is_front_page()) echo 'class="active"' ?>                 >Home</a>                          </li>             <li>                 <a href="<?php echo site_url('/blog'); ?>"                 <?php if(get_post_type() == 'post') echo 'class="active"' ?>                 >Blog</a>             </li>             <li>                 <a href="<?php echo site_url('/projects'); ?>"                 <?php if(get_post_type() == 'project') echo 'class="active"' ?>>Projects</a>             </li>             <li>                 <a href="<?php echo site_url('/about'); ?>"                 <?php if(is_page('about') == 'post') echo 'class="active"' ?>                 >About</a>             </li>             <li>                 <div id="search-icon">                     <i class="fa fa-search"></i>                             </div>             </li>         </ul>     </div> </nav>   <div id="searchbox">     <input type="text" placeholder="Search Here"> </div>   <?php if(is_front_page()); { ?>    <main>  <?php } ?>