main img {
    box-shadow: 0 .2rem .5rem rgba(0,0,0,.05),0 0 .05rem rgba(0,0,0,.1);
    border-radius: .1rem;
    border: 1px solid rgba(0,0,0,.1);
    padding: 5px;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

img.no-shadow {
    box-shadow: none;
}

img.no-border {
    border: none;
}

img.no-center {
    display: inline;
}

img.no-padding {
    padding: 0;
}