.sr-only, .screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0; }
  
  .sr-only-focusable:active, .sr-only-focusable:focus {
    position: static;
    width: auto;
    height: auto;
    overflow: visible;
    clip: auto;
    white-space: normal; }

    body {
        margin: 0;
    }

    *, *::before, *::after {
        -webkit-box-sizing: border-box;
        box-sizing: border-box;
    }

    article, aside, figcaption, figure, footer, header, hgroup, main, nav, section {
        display: block;
    }