.drop-cap {
    overflow: hidden;
}
.drop-cap:first-letter {
    border: 2px solid rgba(0, 0, 0, .3);

    /* Display at the left */
    float: left;
    line-height: 1;

    /* Spacing */
    margin: 0 0.5rem 0 0;
    padding: 0 0.5rem;

    /* Optional */
    font-size: 2rem;
    font-weight: 700;
}