.lens-mobile Block covers all screnn at res > 320 and < 730

On mobile screens this:
`  '@media only screen and (min-device-width:320px) and (max-device-width:773px) {' +
      '/* Assume QHD (1440 x 2560) is highest mobile resolution */' +
      '.lens-mobile { display:block; }' +
    '}'`
makes block .lens-mobile cover all screen because of this:
`width:100%
height:100%`
