body{font-family:Arial,Helvetica,sans-serif;background-color:#f1f2f6;margin:0;padding:0;display:flex;justify-content:center}.container{margin-top:20px;margin-bottom:10px;padding:1rem;background-color:#fff;border-radius:10px;width:90%;max-width:500px;box-shadow:0 4px 8px #0000001a;display:flex;flex-direction:column;align-items:center;justify-content:center}.container h1,h2{text-align:center}input,select,button{display:block;width:100%;margin:8px 0;padding:.5rem;border-radius:5px;border:1px solid #ccc}button{background-color:#00b894;color:#fff;border:none;cursor:pointer}button:hover{background-color:#019874;opacity:.8;transition:.3s}.expense-form{display:flex;flex-direction:column;align-items:center;justify-content:center;margin-top:20px}.expense-form input,.expense-form button{margin:5px;padding:8px}