wp-calypso/client/components/chart-uplot/style.scss

@import "uplot/dist/uPlot.min.css";

.uplot {
	.u-legend {
		color: var(--studio-gray-100);

		// Disable rendering first u-marker, which is for "Date" and is empty.
		> .u-series:first-child > th > .u-marker {
			display: none;
		}

		// Use increased specificity to override original uPlot styles.
		> tr.u-series > th {
			cursor: initial;

			&::after {
				vertical-align: baseline;
			}
			> .u-marker {
				// Nudge marker down to align with text.
				margin-top: -2px;
				// Make the marker round.
				border-radius: 100%;
			}
			> .u-label {
				vertical-align: baseline;
			}
		}
	}
}

.calypso-uplot-chart-container {
	position: relative;
}