// Will visually hide the content, but make it available to screen readers.
// You should be adding the .visually-hidden CSS class to your element directly
// unless you absolutely cannot (e.g., you're retrofitting responsive design).
.assistive() {
    border: 0;
    clip: rect(0 0 0 0);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
}