Exact size in media query

I used a trick and it was solved.

`    deviceManager.add('Extra Small', '576px', {
      widthMedia: '576px'
    });
    deviceManager.add('Small', '767px', {
      widthMedia: '767px) and (min-width:577px'
    });
    deviceManager.add('Medium', '991px', {
      widthMedia: '991px) and (min-width:768px'
    });
    deviceManager.add('Large', '1199px', {
      widthMedia: '1199px) and (min-width:992px'
    });
    deviceManager.add('Extra Large');`