#barcode-input{width:100%;font-size:14px;padding:8px;border:1px solid #ddd;border-radius:4px;box-sizing:border-box;letter-spacing:2px;font-family:monospace;}
#barcode-canvas{display:block;margin:0 auto;max-width:100%;}
#barcode-info{margin-top:10px;text-align:center;color:#666;font-size:13px;font-family:monospace;letter-spacing:1px;}