azrbackup

/* I copy some of the relevant code from my azr blog as backup before I play with it */
/* 735-758 */
.collapsible,.collapsible>summary{
display:block;
overflow:hidden
}
.collapsible>:not(summary){
display:none
}
.collapsible[open]>:not(summary){
display:block
}
.collapsible:focus,.collapsible>summary:focus{
outline:0
}
.collapsible>summary{
cursor:pointer;
display:block;
padding:0
}
.collapsible:focus>summary,.collapsible>summary:focus{
background-color:transparent
}
.collapsible>summary::-webkit-details-marker{
display:none
}

/* changing summary default "display: list-item" value with "display: flex" will hide it as well via 2 issues; so does "list-style: none" in details > summary */