menu.php

<?php include_once ()?>
<nav class="navbar navbar-expand-md px-0">
            <button class="navbar-toggler mb-1" type="button" data-toggle="collapse" data-target="#navbarsExampleDefault"
                aria-controls="navbarsExampleDefault" aria-expanded="false" aria-label="Toggle navigation">
                <span class="navbar-toggler-icon mt-2"><i class="fas fa-bars"></i></span>
            </button>
            <div class="collapse navbar-collapse" id="navbarsExampleDefault">
                <ul class="navbar-nav mr-auto text-center">
                    <li class="nav-item pr-5">
                            <a class="nav-link  " href="index.php">Inicio</a>
                        </li>
                        <li class="nav-item pr-5">
                            <a class="nav-link " href="sobre-mi.php">Sobre mi</a>
                        </li>
                        <li class="nav-item pr-5">
                            <a class="nav-link  " href="proyectos.php">Proyectos</a>
                        </li>
                        <li class="nav-item pr-5">
                            <a class="nav-link active" href="contacto.php">Contacto</a>
                        </li>
                </ul>
                <div class="form-inline my-2 my-lg-0">
                    <a href="" class="btn btn-rojo">Descargar mi CV <i class="fas fa-download"></i></a>
                </div>
            </div>
        </nav>