details, summary{display: block;margin:0;padding:0;outline:none;}
summary{ cursor:pointer}
.no-details details > * {display: none}
.no-details details > summary{outline:none}
.no-details details > summary:before {content: '\25B6 '}
.no-details details[open] > summary:before {content: '\25BC '}
.no-details details > summary:before{ float:left;width: 20px;content: '\25B6'}
.no-details details.open > summary:before{ content:'\25BC'}
.no-details details summary {display:block}