Add upstream

wp-content/plugins/jetpack/modules/widgets/social-icons/social-icons.css

@@ -0,0 +1,75 @@
+.jetpack_widget_social_icons ul,
+.jetpack_widget_social_icons li {
+	list-style: none;
+}
+
+.jetpack_widget_social_icons ul {
+	display: block;
+	margin: 0 0 1.5em;
+	padding: 0;
+}
+
+.jetpack_widget_social_icons ul li {
+	border: 0;
+	display: inline-block;
+	line-height: 1;
+	margin: 0;
+	padding: 0;
+}
+
+.jetpack_widget_social_icons ul li:before,
+.jetpack_widget_social_icons ul li:after {
+	display: none;
+}
+
+.jetpack_widget_social_icons a {
+	border: 0;
+	box-shadow: none;
+	display: block;
+	height: 24px;
+	text-decoration: none;
+	width: 24px;
+}
+
+.jetpack_widget_social_icons svg {
+	color: inherit;
+	fill: currentColor;
+	height: inherit;
+	vertical-align: middle;
+	width: inherit;
+}
+
+/* Sizes */
+
+.jetpack_widget_social_icons ul.size-small a {
+	height: 24px;
+	width: 24px;
+}
+
+.jetpack_widget_social_icons ul.size-medium a {
+	height: 32px;
+	width: 32px;
+}
+
+.jetpack_widget_social_icons ul.size-large a {
+	height: 48px;
+	width: 48px;
+}
+
+/*
+Text meant only for screen readers.
+Provides support for themes that do not bundle this CSS yet.
+@see https://make.wordpress.org/accessibility/2015/02/09/hiding-text-for-screen-readers-with-wordpress-core/
+***********************************/
+.screen-reader-text {
+	border: 0;
+	clip: rect(1px, 1px, 1px, 1px);
+	clip-path: inset(50%);
+	height: 1px;
+	margin: -1px;
+	overflow: hidden;
+	padding: 0;
+	position: absolute ! important;
+	width: 1px;
+	word-wrap: normal ! important;
+}