body {
    font-family: Arial, sans-serif;
    background: #f4f6f8;
    margin: 0;
}

header {
    background: #7898db;
    color: white;
    padding: 15px;
    text-align: center;
}

.container {
    width: 90%;
    margin: 20px auto;
}

select, button {
    padding: 10px;
    font-size: 14px;
    margin-right: 5px;
}

button {
    cursor: pointer;
    background: #2A9D8F;
    color: white;
    border: none;
}

button:hover {
    background: #1e40af;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    background: white;
}

th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}

th {
    background: #7898db;
    color: white;
}

h3 {
    margin-top: 30px;
}