app/assets/stylesheets/administrate/base/_tables.scss
table {
border-collapse: separate;
width: 100%;
}
th {
border-bottom: 1px solid shade($base-border-color, 25%);
text-align: left;
}
th,
td {
padding: $small-spacing;
vertical-align: middle;
}
td {
border-bottom: $base-border;
font-feature-settings: "kern", "liga", "clig", "calt", "lnum", "tnum";
font-kerning: normal;
font-variant-ligatures: common-ligatures, contextual;
font-variant-numeric: lining-nums, tabular-nums;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
word-wrap: normal;
}