.table_center {
    margin-left: auto;
    margin-right: auto;
}

.prompt {
    font-family: georgia;
    font-size: 30px;
    line-height: 1.5;
}

.responded {
    border: 10px solid #ccc;
    border-radius: 5px;
    padding: 10px;
}

.group {
    border: 1px solid #ccc;
    border-radius: 5px;
    padding: 10px;
}

.bg {
    width: 800px;
    height: 600px;
    vertical-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
}