.numbering{
    font-size: 16px;
    width: 20px;
    height: 20px;
    border: 1px solid lightblue;
    border-radius: 20px;
    display: inline-block;
    text-align: center;
    vertical-align: middle;
    padding: 0px;
    margin: 0px
}
#intro{
    font-style:italic;
}