.block {
    border: 0px;
    text-align: center;
    vertical-align: middle;
}
.circle {
    background: #dddddd;
    border-radius: 200px;
    color: black;
    height: 200px;
    font-weight: bold;
    width: 200px;
    display: table;
    margin: 20px auto;
}
.circle p, h2 {
    vertical-align: middle;
    display: table-cell;
}