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

.container {
    max-width: 900px;
    margin: 20px auto;
    padding: 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

h1 {
    color: #007bff;
}

h3 {
    color: #333;
}

input {
    padding: 8px;
    margin: 5px 10px;
    width: 150px;
    font-size: 16px;
}

button {
    background-color: #007bff;
    color: white;
    padding: 10px;
    border: none;
    cursor: pointer;
    margin-top: 10px;
    border-radius: 4px;
}

button:hover {
    background-color: #0056b3;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}
th {
    background-color: #007bff;
    color: white;
}
td {
    background-color: #f9f9f9;
}
table, th, td {
    border: 1px solid #ddd;
}

th, td {
    padding: 12px;
    border: 1px solid #ddd;
    text-align: left;
}

#timestampTable td, #convertedDateTable td {
    font-size: 14px;
}

.relative {
    font-style: italic;
}

#dateTimeSection {
    margin-top: 30px;
}

#dateTimeSection form label {
    margin: 5px;
    font-size: 14px;
}

#dateTimeSection form input {
    width: 50px;
    margin: 5px;
}

#timestampInput {
    background-color: white;
}

#timestampInput:disabled {
    background-color: #ffcccc;
}