Bản mẫu:BKTT:Quyển/styles.css

.group-layout {
    display: flex;
    flex-wrap: wrap;
}

.group-layout .group {
    flex: 0 0 calc(50% - 10px);
}

.group-layout .group .section {
    box-shadow: 0px 3px 6px rgba(0, 0, 0, 0.1);
    border: 1px solid #E0E0E0;
    border-radius: 3px;
    padding: 20px;
}

.group-layout .group .section-title {
    font-size: 24px;
    font-weight: bold;
    padding: 0;
    line-height: 150%;
    vertical-align: -50%;
}

.group-layout .group:nth-child(odd) {
    margin-right: 20px;
}

@media only screen and (max-width: 1100px) {

    .group-layout .group {
        flex: 0 0 100%;
    }

}

#collapse .mw-collapsible-toggle .up,
#collapse.mw-collapsed .mw-collapsible-toggle .down {
 display: none;
}
#collapse .mw-collapsible-toggle .down,
#collapse.mw-collapsed .mw-collapsible-toggle .up {
 display: block;
}

#collapse .mw-collapsible-toggle:focus { outline:none; }

#collapse .mw-collapsible-toggle { float: none;text-align:left;color:#FF5A28;margin:20px 20px 10px 20px; }

.td1 {width:80px;height:80px;text-align:center;vertical-align:top;}
.td2 {vertical-align:top;padding-left:10px;}

ul {
  list-style: none;
}

ul li::before {
  content: "\2022";
  color: #EE5A28;
  font-weight: bold;
  display: inline-block; 
  width: 1em;
  margin-left: -1em;
}

.more { column-count:4; border:solid 1px silver; padding:15px; }

@media only screen and (max-width: 1650px) {
.more { column-count:3;}
}
@media only screen and (max-width: 1100px) {
.more { column-count:2;}
}
@media only screen and (max-width: 550px) {
.more { column-count:1;}
}