.collapsible-container
                        {
                                outline:1px solid silver; 
                                display:grid;
                        }

                        
/*
                        .collapsible-container:hover,                        
                        .collapsible-control:hover,
                        .collapsible-controlled:hover
                         { display:block;}
*/

                        .collapsible-control-section-name, 
                        .collapsible-control-section-toggle-button             
                        { 
                                display:inline-block; 
                                width:100%; 
                                text-indent:7px; 
                        }

                        /*
                        .collapsible-control-section-toggle-button { width:100px; margin:0}
                        .collapsible-control-section-toggle-div { width:200px; outline:1px solid red; text-align:center;}
                        */
                        .collapsible-control
                        { 
                                opacity:60%;
                                margin:10px; 
                                height:1.4rem; 
                                line-height:1.4;

                                display:grid;
                                grid-template-columns:1fr 1fr 1fr;
                        }
                        .collapsible-controlled
                        { 
                                outline:1px solid silver;
                                padding:15px; 
                                margin-bottom:25px;  
                                opacity:100%;
                                margin:10px; 
                              display:none; 
                              overflow-x:auto;
                              max-width:980px;
                        }
                        .collapsible-controlled:hover { display:block; }
                          
                        .collapsible-control-section-notes  {  display:grid; grid-auto-flow: column; }
                        .collapsible-control-section-notes div { display:inline-block; height:100%; }
                        .collapsible-control-section-notes div:nth-of-type(1) { width:10%;}
                        .collapsible-control-section-notes div:nth-of-type(2) { width:78%; }
                        .collapsible-control-section-notes div:nth-of-type(3) { width:10%; color:green; text-align:right; text-indent:20px;}