body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

.container {
    width: 80%;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: #333;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

table, th, td {
    border: 1px solid #ddd;
}

th, td {
    padding: 12px;
    text-align: left;
}

th {
    background-color: #f2f2f2;
}

tr:nth-child(even) {
    background-color: #f9f9f9;
}

tr:hover {
    background-color: #f1f1f1;
}

form {
    width: 100%;
    max-width: 600px;
    margin: 0 auto 20px;
    padding: 20px;
    background-color: #fff;
    border: 1px solid #ddd;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

form label {
    display: block;
    margin-bottom: 8px;
    color: #333;
}

form input[type="number"],
form input[type="text"],
form select {
    width: 100%;
    padding: 10px;
    margin-bottom: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

form input[type="submit"] {
    width: 100%;
    padding: 10px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

form input[type="submit"]:hover {
    background-color: #45a049;
}
.navbar {
    background-color: #45a049;
    overflow: hidden;
}
.navbar a {
    float: left;
    display: block;
    color: #f2f2f2;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}
.navbar a:hover {
    background-color: #ddd;
    color: black;
}

.delete-btn {
width: 100%;
    padding: 10px;
    background-color: #b2424a;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}