* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    padding: 20px;
}

.container {
    max-width: 1000px;
    margin: auto;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

nav a {
    margin-right: 15px;
    color: #333;
    text-decoration: none;
    font-weight: bold;
}

nav a:hover {
    color: #007bff;
}

h1 {
    margin-bottom: 20px;
}

main {
    width: 95vw;
}

table {
    width: 95vw;
    border-collapse: collapse;
    margin: 20px 0;
}

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

th, td {
    padding: 10px;
    text-align: left;
}

button, input[type="submit"] {
    background: #007bff;
    color: white;
    border: none;
    padding: 10px 15px;
    cursor: pointer;
    border-radius: 5px;
}

button:hover {
    background: #0056b3;
}