.tool-image-base64 label{display:block;font-size:13px;color:#666;margin:10px 0 6px}
.tool-image-base64 .ib-tabs{display:flex;gap:8px;margin-bottom:8px}
.tool-image-base64 .ib-tabs button{border:1px solid #ddd;background:#fff;padding:6px 12px;cursor:pointer;font:inherit}
.tool-image-base64 .ib-tabs button.on{background:#337ab7;border-color:#337ab7;color:#fff}
.tool-image-base64 textarea{width:100%;font-family:Consolas,monospace;font-size:12px}
.tool-image-base64 .ib-preview{margin-top:12px;text-align:center}
.tool-image-base64 #ib-img{max-width:100%;max-height:360px}