css span with circle code example

Example: make span html circle css

span {
    display: block;
    height: 60px;
    width: 60px;
    line-height: 60px;

    -moz-border-radius: 30px; /* or 50% */
    border-radius: 30px; /* or 50% */

    background-color: black;
    color: white;
    text-align: center;
    font-size: 2em;
}