<style type="text/css">
:focus-visible {outline: black solid 2px;}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}
.sr-only-focusable:active, .sr-only-focusable:focus {
    position: static;
    width: auto;
    height: auto;
    margin: 0;
    overflow: visible;
    clip: auto;
}
a:focus {
    outline: 2px auto -webkit-focus-ring-color;
    outline-offset: -2px;
}
</style>
