/* 鍵盤焦點樣式（無障礙 CS1140101E）
   供未載入 accessibility.css 的版型使用（英文版網站、明信片交流活動專區、國際教育交流導航網站），
   與主站相同：深藍外框加白色內圈，深淺底色上都看得到；只在鍵盤操作（:focus-visible）時顯示，滑鼠點擊不出現外框。 */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible,
summary:focus-visible, iframe:focus-visible, [tabindex]:focus-visible, [contenteditable="true"]:focus-visible {
  outline: 3px solid #173f71 !important;
  outline-offset: 2px !important;
  box-shadow: 0 0 0 2px #fff !important;
}
.sr-only-focusable:focus, .sr-only-focusable:active,
.visually-hidden-focusable:focus, .visually-hidden-focusable:active {
  position: relative;
  z-index: 1100;
  padding: .5rem .75rem;
  background: #fff;
  color: #173f71;
}