Template:ContentBoxContainer/styles.css

.t-cb-container { display: flex; flex-wrap: wrap; align-items: stretch; }

.t-cb-container > div, .t-cb-container > table { border: 1px solid #aaa; margin: 0.2em; width: 250px; flex-grow: 1; }

.t-cb-container > div { padding: 1em; }