Showing portrait mode of Volumio on landscape orientation

I diy a music player using PI & Boss Dac with a 4" LCD. Everything is good!!! However, the Volumio display on 4" in landscape mode is too small.

Can I use the portrait mode for my landscape orientation LCD as below?

I did try to adjust the Album Art bigger followed the guides in this size-album-cover-t5829.html, however, it is not enough.

#playbackPanelWrapper #leftPanel,#playbackPanelWrapper #rightPanel{float:left;width:25%}
#playbackPanelWrapper #centerPanel{float:left;width:50%}
#trackInfo img{width:100%;margin:10px auto;max-width:500px;max-height:500px;border:10px solid rgba(0,0,0,.5)}

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