static/css/impala/tooltips.less (55 lines of code) (raw):

@import 'lib'; #tooltip { display: none; background: #2A4364; color: #fff; font-size: 11px; border: 1px solid #fff; .border-radius(.8em); max-width: 300px; text-align: center; position: absolute; padding: 1em; pointer-events: none; &.error { background: #6c1a1a; } span { display: block; line-height: 1.2em; } &:before { content: "\00a0"; display: block; /* reduce the damage in FF3.0 */ position: absolute; width: 0; height: 0; margin-left: -6px; left: 50%; bottom: -16px; border: solid transparent; border-width: 8px 6px; border-top-color: #2a4364; pointer-events: none; } &.error:before { border-top-color: #6c1a1a; } } .tip { background-color: #ddd; .border-radius(20px); color: #fff; cursor: help; display: inline-block; font-size: 14px; font-weight: bold; height: 18px; line-height: 18px; text-align: center; text-decoration: none; width: 18px; } .tip:hover { background-color: #2a4364; }