#PageDetail .date{display:flex;float:right}#txtComment:read-only{background:#ddd;pointer-events:none}@media only screen and (max-width: 500px){#PageDetail{margin-top:12px}#PageDetail .date{font-style:italic}#PageDetail .date .far{margin-right:5px}}.block_btn_send{display:flex;justify-content:end;margin-top:10px}.detail-audio-file audio{width:100%}#tai-lieu-hop .link-file{font-size:17px;margin-top:15px;margin-bottom:15px;color:blue}#tai-lieu-hop .link-file:hover{color:red}#tai-lieu-hop a{color:blue;font-size:17px;font-weight:bold}#tai-lieu-hop a:hover{color:red}#tai-lieu-hop .introtext{font-size:15px}#tai-lieu-hop .bi{width:1.25rem;height:1.25rem;font-weight:bold;margin-left:20px}#tai-lieu-hop .listtailieu ul li{padding-bottom:10px}@media only screen and (min-width: 600px){#tai-lieu-hop{min-height:500px}}