body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    color: #333;
}

h1, h2, h3 {
    text-align: center;
}

form {
    text-align: center;
    margin-bottom: 20px;
}

#participants label, #participants input {
    display: inline-block;
    margin: 5px 0;
}

#schedule {
    text-align: center;
}

.match-row {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 5px 0;
}

.match-row label {
    margin-right: 10px;
}

.round {
    border: 1px solid #ddd;
    padding: 10px;
    margin: 10px;
    background-color: #ffffff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

button {
    background-color: #4CAF50;
    color: white;
    padding: 10px 20px;
    border: none;
    cursor: pointer;
    margin: 10px;
}

button:hover {
    background-color: #45a049;
}

table {
    margin: 0 auto;
    border-collapse: collapse;
    width: 80%;
}

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

th {
    background-color: #4CAF50;
    color: white;
}

td {
    background-color: #ffffff;
}