如何仅从屏幕阅读器隐藏任何元素，而不是从普通用户的页面隐藏？

/* Hide for both screenreaders and browsers
      css-discuss.incutio.com/wiki/Screenreader_Visibility */
    .hidden { display: none; visibility: hidden; }

/* Hide only visually, but have it available for screenreaders
    www.webaim.org/techniques/css/invisiblecontent/ ; &  j.mp/visuallyhidden ; */
   .visuallyhidden { position: absolute !important;   
    clip: rect(1px 1px 1px 1px); /* IE6, IE7 */
    clip: rect(1px, 1px, 1px, 1px); }

/* Hide visually and from screenreaders, but maintain layout */
   .invisible { visibility: hidden; }