#nav{display:flex;flex-direction:column;align-items:center;margin-bottom:20px}.button-row{display:flex;justify-content:center;margin-bottom:10px}.nav-button{display:inline-block;padding:10px 20px;margin:5px;border:2px solid #007bff;border-radius:5px;text-decoration:none;color:#fff;background-color:#007bff;text-align:center;transition:background-color .3s}.nav-button:hover{background-color:#0056b3}