I have already set a resolution of 1366x768 and it is obvious, as
xrandr tool shows the following output:
Screen 0: minimum 320 x 200, current 1366 x 768, maximum 8192 x 8192 eDP-1 connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 193mm
Now, I'm trying to render a web application whose viewport resolution is 1354x864.8:
But, I don't know why not all the pixels were rendered on the right side of the application, despite enough resolution mode was set whose width is clearly bigger than the application width.