body {
    background-color: #333;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    text-align: center;
}

input[type="text"] {
    background-color: white;
    border: none;
    border-radius: 5px;
    padding: 10px;
    margin: 10px 0;
    width: 200px;
}

button {
    border: none;
    color: white;
    padding: 10px 20px;
    margin: 5px;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    opacity: 0.8;
}

table {
    width: 80%;
    margin: 20px auto;
    border-collapse: collapse;
    border: 1px solid #444;
}

th {
    background-color: #007bff;
    color: white;
    font-weight: bold;
    padding: 10px;
    text-align: left;
}

tr:nth-child(even) {
    background-color: #444;
}

tr:hover {
    background-color: #555;
}

td, th {
    padding: 10px;
    border: 1px solid #444;
    text-align: center;
}

.blue-button {
    background-color: #007bff;
}

.green-button {
    background-color: #28a745;
}

.red-button {
    background-color: #dc3545;
}

a {
    background-color: #007bff;
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    cursor: pointer;
    display: inline-block;
}

a:hover {
    opacity: 0.8;
}