themes-wordpress/varia/sass/vendors/woocommerce/pages/_my-account.scss

/**
 * Account page
 */
body[class*="woocommerce"] #page { // adding #page here to override default wc styles without !important

	.entry-content .woocommerce-MyAccount-navigation {

		width: 100%;

		ul li a {
			line-height: map-deep-get($config-global, "font", "line-height", "heading");
			display: inline-table;
		}

		& + *:not(:first-child) {
			margin-top: 0;
		}

		@include media(tablet) {
			width: 20%;
		}
	}

	.woocommerce-MyAccount-content {

		width: 100%;

		.woocommerce-notices-wrapper:empty {
			display: none;
		}

		fieldset {
			border: 1px solid map-deep-get($config-global, "color", "border", "default");
			padding: map-deep-get($config-global, "spacing", "unit");
			border-radius: 3px;
		}

		@include media(tablet) {
			width: calc(80% - #{map-deep-get($config-global, "spacing", "horizontal")});
		}
	}

	.addresses .title h3 {
		font-size: map-deep-get($config-global, "font", "size", "base")
	}

	.addresses .title {
		.edit {
			line-height: 1;
		}
	}
}

.woocommerce-account .entry-content .woocommerce > h2,
body[class*="woocommerce"] #page div[class*="woocommerce"] h2 {
	font-size: map-deep-get($config-global, "font", "size", "lg");
}