header.html

<link href="image/logo.png" type="image/jpg" rel="shortcut icon">
        <link rel="stylesheet" type="text/css" href="header.css">
        <link href="vendor/fontawesome-free/css/all.min.css" rel="stylesheet" type="text/css">
        <link href="https://fonts.googleapis.com/css?family=Open+Sans:400i|Slabo+27px&display=swap" rel="stylesheet">
        <link rel="stylesheet" href="font-awesome/css/font-awesome.min.css">
<div id="header">
    <div id="nav">
            <ul>
                <li><img alt="Logo" src="Picture2.png" id="logo" ></li>
                <li><a href="login.html" class="nav-link">Sign In</a></li>
                <li><a href="about.html" class="nav-link"><!-- <i class="far fa-address-card"> -->About Us</i></a></li>
                <li><a href="advert_loc.php" class="nav-link"><!-- <i class="fas fa-user-tie"> -->Agents</i></a></li>
                <li><a href="location.php" class="nav-link">Locations</a></li>
                <li><a href="index.html" class="nav-link">Home</a></li>
                
            </ul>
        </div >
        <!-- <div class="search">
            <input type="search" class="search-box" name="search" placeholder="Search.."><i class="fas fa-search fa-2x search_icon" aria-hidden="true"></i>
        </div> -->
    </div>