ds4/src/scss/utils/_mixins.scss

@mixin element-invisible {
    position: absolute;

    width: 1px;
    height: 1px;
    margin: -1px;
    border: 0;
    padding: 0;

    clip: rect(0 0 0 0);
    overflow: hidden;
}

@mixin hide {
    display: none;
}