testbed/Textualize__textual/examples/code_browser.css

Screen {
    background: $surface-darken-1;
}

#tree-view {
    display: none;
    scrollbar-gutter: stable;
    width: auto;
}

CodeBrowser.-show-tree #tree-view {
    display: block;
    dock: left;
    height: 100%;            
    max-width: 50%;
    background: #151C25;    
}

DirectoryTree {
    padding-right: 1;   
}

#code-view {
    overflow: auto scroll;  
    min-width: 100%;        
}
#code {
    width: auto;    
}