if (typeof setting.boxCssInfo === "undefined") {
            $boxElement.css({
              border: "1px solid #cccccc",
              "box-shadow":
                "0 1px 1px 0px rgba(0, 0, 0, 0.1), 0 3px 2px 0px rgba(82, 168, 236, 0.2)",
              "background-color": "#fff"
            });
          } else {
            $boxElement.css(setting.boxCssInfo);
          }

          $textArea = $element;

   ============================================ */
.btn:focus-visible,
.suggestion-chip:focus-visible,
.source-card:focus-visible,
.message-action-btn:focus-visible {
    outline: 2px solid #0052cc;
    outline-offset: 2px;
}

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;