#books-table table{border-collapse:collapse}#books-table td,th{border:1px solid black;padding:5px}#books-table label{display:block;margin:1rem 0}#books-table select{margin-left:.5rem}#books-table .error-message{color:red;margin:1rem 0;font-family:Courier New,Courier,monospace}nav a{display:block}nav{display:flex;justify-content:space-around}#books-form .error-message{color:red;margin:1rem 0;font-family:Courier New,Courier,monospace}#books-form .success-message{color:green;margin:1rem 0;font-family:Courier New,Courier,monospace}#books-form label{display:block;margin-bottom:10px}#authors-form .error-message{color:red;margin:1rem 0;font-family:Courier New,Courier,monospace}#authors-form .success-message{color:green;margin:1rem 0;font-family:Courier New,Courier,monospace}#authors-form label{display:block;margin-bottom:10px}#login-form .error-message{color:red;margin:1rem 0;font-family:Courier New,Courier,monospace}#login-form label{display:block;margin-bottom:10px}#signup-form .error-message{color:red;margin:1rem 0;font-family:Courier New,Courier,monospace}#signup-form label{display:block;margin-bottom:10px}