style.scss

.wp-block-table {
	$subtle-light-gray: #f3f4f5;
	$subtle-pale-green: #e9fbe5;
	$subtle-pale-blue: #e7f5fe;
	$subtle-pale-pink: #fcf0ef;

	overflow-x: auto;

	table {
		border-collapse: collapse;
		width: 100%;
	}

	thead {
		border-bottom: 3px solid;
	}

	tfoot {
		border-top: 3px solid;
	}

	// Match default border style to default style in editor
	td,
	th {
		border: $border-width solid;
		padding: 0.5em;
	}

	// Fixed layout toggle
	.has-fixed-layout {
		table-layout: fixed;
		width: 100%;

		td,
		th {
			word-break: break-word;
		}
	}

	&.alignleft,
	&.aligncenter,
	&.alignright {
		// Override default display property for align styles.
		// The table element needs to be kept as display table
		// for table features to work reliably.
		display: table;
		// Table cannot be 100% width if it is aligned, so set
		// width as auto.
		width: auto;

		td,
		th {
			word-break: break-word;
		}
	}

	.has-subtle-light-gray-background-color {
		background-color: $subtle-light-gray;
	}

	.has-subtle-pale-green-background-color {
		background-color: $subtle-pale-green;
	}

	.has-subtle-pale-blue-background-color {
		background-color: $subtle-pale-blue;
	}

	.has-subtle-pale-pink-background-color {
		background-color: $subtle-pale-pink;
	}

	// "Stripes" style variation.
	&.is-style-stripes {
		border-spacing: 0;
		border-collapse: inherit;
		background-color: transparent;

		tbody tr:nth-child(odd) {
			background-color: $gray-100;
		}

		&.has-subtle-light-gray-background-color {
			tbody tr:nth-child(odd) {
				background-color: $subtle-light-gray;
			}
		}

		&.has-subtle-pale-green-background-color {
			tbody tr:nth-child(odd) {
				background-color: $subtle-pale-green;
			}
		}

		&.has-subtle-pale-blue-background-color {
			tbody tr:nth-child(odd) {
				background-color: $subtle-pale-blue;
			}
		}

		&.has-subtle-pale-pink-background-color {
			tbody tr:nth-child(odd) {
				background-color: $subtle-pale-pink;
			}
		}

		th,
		td {
			border-color: transparent;
		}

		border-bottom: 1px solid $gray-100;
	}

	// Border Styles
	//
	// Allow any custom border color, style or width selections to be inherited
	// from the table element that receives the border support props.

	.has-border-color {
		> *,
		tr,
		th,
		td {
			border-color: inherit;
		}
	}

	table[style*="border-top-color"] {
		> *,
		tr:first-child {
			border-top-color: inherit;

			th,
			td {
				border-top-color: inherit;
			}
		}

		tr:not(:first-child) {
			border-top-color: currentColor;
		}
	}
	table[style*="border-right-color"] {
		> *,
		tr,
		th,
		td:last-child {
			border-right-color: inherit;
		}
	}
	table[style*="border-bottom-color"] {
		> *,
		tr:last-child {
			border-bottom-color: inherit;

			th,
			td {
				border-bottom-color: inherit;
			}
		}

		// Border support classes and styles are applied on the table block
		// itself. This means that without the rule below every table row would
		// have a bottom border matching the color of the table's border.
		// This style gives the best visual appearance and most expected result
		// until we can control individual table rows or cells via inner blocks.
		tr:not(:last-child) {
			border-bottom-color: currentColor;
		}
	}
	table[style*="border-left-color"] {
		> *,
		tr,
		th,
		td:first-child {
			border-left-color: inherit;
		}
	}

	table[style*="border-style"] {
		> *,
		tr,
		th,
		td {
			border-style: inherit;
		}
	}

	table[style*="border-width"] {
		> *,
		tr,
		th,
		td {
			border-width: inherit;
			border-style: inherit;
		}
	}
}