Preview:
a.header-menu-controls-control.header-menu-controls-control--active>span:nth-child(2) {
    visibility: hidden;
}
a.header-menu-controls-control.header-menu-controls-control--active>span:nth-child(2):before {
    visibility: visible;
    content: "new back";
    width: 100%;
}
downloadDownload PNG downloadDownload JPEG downloadDownload SVG

Tip: You can change the style, width & colours of the snippet with the inspect tool before clicking Download!

Click to optimize width for Twitter