Breakpoint indicator

gistfile1.css

body:before {
    position: fixed;
    content: "No Breakpoint";
    background: white;
    color:black;
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: .25em;
    top:10px;
    left:10px;
    pointer-events: none;
    font-family: sans-serif;
    padding: .2em .6em .3em;
    text-transform: uppercase;
    font-size:1rem;
    z-index:500;

    @include media(mobile) { content: "mobile"}
    @include media(phablet) { content: "phablet"}
    @include media(tablet) { content: "tablet"}
    @include media(desktop) { content: "desktop"}
    @include media(xxl) { content: "xxl"}
}