/* Remove theme wrapper box around figure alt text */
.figure,
figure {
    border: none !important;
    background: none !important;
    box-shadow: none !important;
}

/* Then add your own border just around the image */
figure img {
    border: 1px solid #FFD700 !important;
    border-radius: 3px !important;
    display: block !important;
    margin: 0 auto !important;
}

/* Style the pseudo-caption (alt text) if the theme displays it visibly */
.figure .alt,
figure .alt {
    color: #FFD700 !important;
    font-size: 0.8em !important;
    font-weight: normal !important;
    border: none !important;
    background: none !important;
    text-align: center !important;
    margin-top: 4px !important;
}