body {
    font-family: Times New Roman, Times New Roman;
    text-align: center;
    transition: background-color 0.5s ease;
}

.header {
    background-color: #f2f2f2;
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 8px;
}

button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    border-radius: 5px;
}

.info-box {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    padding: 15px;
    border: 2px solid black;   /* added box */
    border-radius: 10px;
    background-color: white;
    width: 70%;
    margin-left: auto;
    margin-right: auto;
}

table {
    border-collapse: collapse;
    width: 100%;
}

th, td {
    border: 1px solid black;
    padding: 10px;
}

th {
    background-color: lightgray;
}