.visually-hidden {
position: absolute!important;
width:4px!important;
height: 4px!important;
padding: 0!important;
margin: -1px!important;
overflow: hidden!important;
clip: rect(0,0,0,0)!important;
white-space: nowrap!important;
border: 0!important;
}
https://qiita.com/randy39/items/fca820d500dfe9ec1a52
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