img#avatar {
    display: block;
    margin-left: auto;
    margin-right: auto;
    border-radius: 5px;
    -webkit-box-shadow: 0px 0px 10px -5px white;
    -moz-box-shadow: 0px 0px 10px -5px white;
    box-shadow: 0px 0px 10px -5px white;
}
@media (min-width: 48em) {
    img#avatar {
        margin-left: 0 !important;
    }
}

.sidebar i {
    margin-right: 10px;
}