/*========無障礙調整=============*/
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.accesskey-text{
margin-bottom: 40px;
}


/*===========導盲磚==============*/
.accesskey-box{
  position: absolute;
  z-index: 100;
  color: #747474;
}
.foot-accesskey,
.top-accesskey{
top: 0px;
left: 10px;
}

.content-accesskey,
.right-accesskey,
.left-accesskey{
top: -25px;
left: 0px;
}

.bottom-accesskey{
top: -30px;
left: 10px;
}

/*========tab焦點=============*/
/*========黃色=========*/
.a11y_box:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 3px solid #FFD700 !important;  
    outline-offset: 4px !important;    
}

/* 為不支援 :focus-visible 的情況提供替代方案 */
.a11y_box:focus:not(:focus-visible),
a:focus:not(:focus-visible),
button:focus:not(:focus-visible),
input:focus:not(:focus-visible) {
    outline: none;  
}

/*========紅色=========*/
.carousel-inner  .active .a11y_red,
.form-control:focus-visible,
.a11y_red:focus-visible{
    outline: 3px solid #FF3333 !important;  
    outline-offset: 4px !important;    
}
.form-control:not(:focus-visible),
.a11y_red:focus:not(:focus-visible) {
    outline: none;  
}

/*=========綠色===========*/
.a11y_green:focus-visible{
    outline: 3px solid #1BCC00 !important;  
    outline-offset: 4px !important;    
}
.a11y_green:focus:not(:focus-visible) {
    outline: none;  
}


/*========撥放器按鈕=============*/
#operate_box{
  position: absolute;
  z-index: 100000;
  top: 15px;
  left: 15px;
}