in admin theme css edit

Yes ,but it is not for mobile version

  *     Filename:        base.css
  *     Description:     Oxwall Origin Theme Base CSS File
  *     Version:         1.0.0
  *
  *     -- FILE STRUCTURE: --
  *
  *     [ 1] CSS Defaults Reset          __reset
  *     [ 2] Base Elements               __base
  *     [ 3] Masterpage & Page Layout    __layout
  *     [ 4] Forms                       __forms
  *     [ 5] Common Blocks               __blocks
  *     [ 6] Standard Listings           __listings
  *     [ 7] Tables                      __tables
  *     [ 8] Messages & Notifications    __messages
  *     [ 9] Thumbnails & Icons          __icons
  *     [10] Menus                       __menus
  *     [11] Pagination                  __pagination
  *     [12] Typography                  __typography
  *     [13] Misc                        __misc
  *     [14] Clearfix                    __clearfix
  *     [15] Plugin Styles               __plugins
  *     [16] Admin Styles                __admin
  *

you need to look in your theme folder for the css and put what you want to change in admin theme css edit
it will override the theme css

I know guys all of this ,i am asking for override css, it is not good to keep same css file with new update because will not contain new sections but override will fix this problem so i can keep using old css as override for all versions

Layth, unfortunately there is no any setting, for example in admin panel, that you can change to achieve needed results. But we are thinking about such kind of improvements for mobile version. Also we have a list of the features which are in development or will be developed in the upcoming releases here: http://www.oxwall.org/roadmap.
Presently, to make CSS code changes for mobile version you should edit the ow_themes/yourtheme/mobile/base.css file. You can inspect element with Firebug and change necessary classes.

Before updating create a backup and after update process review the changes and merge them into the one css file.

Thanks for reply i am already changing mobile css by this way

Layth, if you have further questions or concerns, feel free to ask us.