From SPCodex, The Smashing Pumpkins wiki
.infobox {
border: 1px solid #a2a9b1;
border-spacing: 3px;
background-color: #f8f9fa;
color: black;
/* @noflip */
margin: 0.5em 0 0.5em 1em;
padding: 0.2em;
/* @noflip */
float: right;
/* @noflip */
clear: right;
font-size: 88%;
line-height: 1.5em;
}
.infobox caption {
font-size: 125%;
font-weight: bold;
padding: 0.2em;
text-align: center;
}
.infobox td,
.infobox th {
vertical-align: top;
/* @noflip */
text-align: left;
}
.infobox.bordered {
border-collapse: collapse;
}
.infobox.bordered td,
.infobox.bordered th {
border: 1px solid #a2a9b1;
}
.infobox.bordered .borderless td,
.infobox.bordered .borderless th {
border: 0;
}
.infobox.sisterproject {
width: 20em;
font-size: 90%;
}
.infobox.standard-talk {
border: 1px solid #c0c090;
background-color: #f8eaba;
}
.infobox.standard-talk.bordered td,
.infobox.standard-talk.bordered th {
border: 1px solid #c0c090;
}
/* styles for bordered infobox with merged rows */
.infobox.bordered .mergedtoprow td,
.infobox.bordered .mergedtoprow th {
border: 0;
border-top: 1px solid #a2a9b1;
/* @noflip */
border-right: 1px solid #a2a9b1;
}
.infobox.bordered .mergedrow td,
.infobox.bordered .mergedrow th {
border: 0;
/* @noflip */
border-right: 1px solid #a2a9b1;
}
/** MOBILE **/
@media (max-width: 720px) {
.infobox {
font-size: 90%;
position: relative;
border: 1px solid #eaecf0;
background-color: #f8f9fa !important;
display: flex;
flex: 1 1 100%;
flex-flow: column nowrap;
width: 100% !important;
max-width: 100% !important;
}
.infobox td, .infobox th {
vertical-align: top;
text-align: left;
}
.infobox th,
.infobox td {
vertical-align: top;
border: 0;
border-bottom: 1px solid #eaecf0;
padding: 7px 10px;
}
.infobox > tbody,
.infobox > caption {
display: flex;
flex-flow: column nowrap;
}
.infobox caption {
padding: 10px 10px 0;
text-align: center;
}
.infobox caption {
font-size: 125%;
font-weight: bold;
text-align: center;
}
.infobox tbody > tr > td,
.infobox tbody > tr > th {
flex: 1 0;
}
.infobox td:only-child,
.infobox th:only-child {
display: block;
width: 100%;
box-sizing: border-box;
}
.infobox > tbody > tr {
min-width: 100%;
display: flex;
flex-flow: row nowrap;
}
}