.christian-circle {
    background: url('../img/personnel/christian_bannan.jpg') no-repeat center;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
    border-radius: 50%;
    width: 146px;
    height: 146px;
    margin: auto;
}

.roger-circle {
    background: url('../img/personnel/roger_wrigley.jpg') no-repeat center;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
    border-radius: 50%;
    width: 146px;
    height: 146px;
    margin: auto;
}