body {
    font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
    background-color: #f0f2f5;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 25px;
}

.container {
    background-color: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    width: 90%;
    max-width: 600px;
}

h1, h2 {
    text-align: center;
    color: #0056b3;
}

#sales-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

label {
    font-weight: bold;
}

input[type="text"],
input[type="date"],
input[type="number"] {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    box-sizing: border-box;
}

button {
    background-color: #0edb4b;
    color: white;
    border: none;
    padding: 12px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #0056b3;
}

#sales-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

#sales-table thead {
    background-color: #0edb4b;
    color: white;
}

#sales-table th, #sales-table td {
    border: 1px solid #ddd;
    padding: 12px;
    text-align: left;
}

#sales-table tbody tr:nth-child(even) {
    background-color: #f4f4f4;
}