diff --git a/core/css/share.scss b/core/css/share.scss
new file mode 100644
index 0000000000..a72437c4ae
--- /dev/null
+++ b/core/css/share.scss
@@ -0,0 +1,199 @@
+/* Copyright (c) 2011, Jan-Christoph Borchardt, http://jancborchardt.net
+ This file is licensed under the Affero General Public License version 3 or later.
+ See the COPYING-README file. */
+
+#dropdown {
+	background: #eee;
+	border-bottom-left-radius: 3px;
+	border-bottom-right-radius: 3px;
+	box-shadow: 0 2px 3px rgba(50, 50, 50, 0.4);
+	display: block;
+	margin-right: 0;
+	position: absolute;
+	right: 0;
+	width: 420px;
+	z-index: 500;
+	padding: 16px;
+}
+
+@media only screen and (min-width: 768px) and (max-width: 990px) {
+	#dropdown {
+		/* this limits the dropdown to float below the sidebar for mid narrow screens */
+		left: 20px;
+	}
+}
+
+.shareTabView {
+	.unshare.icon-loading-small {
+		margin-top: 1px;
+	}
+	.shareWithLoading, .linkShare .icon-loading-small {
+		display: inline-block !important;
+		padding-left: 10px;
+	}
+	.shareWithLoading {
+		position: relative;
+		right: 70px;
+		top: 2px;
+	}
+	.icon-loading-small.hidden {
+		display: none !important;
+	}
+	.avatar {
+		margin-right: 8px;
+		display: inline-block;
+		overflow: hidden;
+		vertical-align: middle;
+		width: 32px;
+		height: 32px;
+	}
+}
+
+.share-autocomplete-item {
+	display: flex;
+	.autocomplete-item-text {
+		margin-left: 10px;
+		margin-right: 10px;
+		white-space: nowrap;
+		text-overflow: ellipsis;
+		overflow: hidden;
+		line-height: 32px;
+		vertical-align: middle;
+	}
+}
+
+#shareWithList {
+	list-style-type: none;
+	padding: 8px;
+	li {
+		padding-top: 10px;
+		padding-bottom: 10px;
+		font-weight: bold;
+		line-height: 21px;
+		white-space: normal;
+		width: 100%;
+	}
+	.sharingOptionsGroup {
+		flex-shrink: 0;
+		position: relative;
+		.popovermenu {
+			right: -6px;
+			top: 40px;
+			padding: 3px 6px;
+		}
+	}
+	.shareOption {
+		white-space: nowrap;
+		display: inline-block;
+	}
+	.unshare img, .showCruds img {
+		vertical-align: text-bottom;
+		/* properly align icons */
+	}
+	label input[type=checkbox] {
+		margin-left: 0;
+		position: relative;
+	}
+	.username {
+		padding-right: 8px;
+		white-space: nowrap;
+		text-overflow: ellipsis;
+		display: inline-block;
+		overflow: hidden;
+		vertical-align: middle;
+		flex-grow: 5;
+	}
+	li label {
+		margin-right: 8px;
+	}
+}
+
+.shareTabView {
+	label {
+		font-weight: 400;
+		white-space: nowrap;
+	}
+	input[type='checkbox'] {
+		margin: 0 3px 0 8px;
+		vertical-align: middle;
+	}
+}
+
+a {
+	&.showCruds {
+		display: inline;
+		opacity: .5;
+	}
+	&.unshare {
+		display: inline-block;
+		opacity: .5;
+		padding: 10px;
+	}
+}
+
+#link {
+	border-top: 1px solid #ddd;
+	padding-top: 8px;
+}
+
+.shareTabView {
+	input[type='submit'] {
+		margin-left: 7px;
+	}
+	form {
+		font-size: 100%;
+		margin-left: 0;
+		margin-right: 0;
+	}
+	.error {
+		color: #e9322d;
+		border-color: #e9322d;
+		box-shadow: 0 0 6px #f8b9b7;
+	}
+}
+
+#link #showPassword img {
+	padding-left: 5px;
+	width: 12px;
+}
+
+.reshare, #link label, #expiration label {
+	display: inline-block;
+	padding: 6px 4px;
+}
+
+a {
+	&.showCruds:hover, &.unshare:hover {
+		opacity: 1;
+	}
+}
+
+#defaultExpireMessage, .reshare {
+	/* fix shared by text going out of box */
+	white-space: normal;
+}
+
+#defaultExpireMessage {
+	/* show message on new line */
+	display: block;
+	padding-left: 4px;
+	/* TODO: style the dropdown in a proper way - border-box, etc. */
+	width: 90%;
+}
+
+.ui-autocomplete {
+	/* limit dropdown height to 4 1/2 entries */
+	max-height: 200px;
+	overflow-y: auto;
+	overflow-x: hidden;
+}
+
+.notCreatable {
+	padding-left: 12px;
+	padding-top: 12px;
+	color: #999;
+}
+
+.shareTabView .mailView .icon-mail {
+	opacity: 0.5;
+}