(fix) media preview position

Author: antoine92190

src/lib/MediaPreview/MediaPreview.scss

@@ -9,13 +9,16 @@ $media-preview-width-sm: 20px;
 	z-index: 99;
 	width: 100vw;
 	height: 100vh;
+	display: flex;
+	align-items: center;
 	background-color: rgba(0, 0, 0, 0.8);
 	outline: none;
 
 	.vac-media-preview-container {
 		height: calc(100% - #{$media-preview-height * 2});
 		width: calc(100% - #{$media-preview-width-lg * 2});
 		padding: $media-preview-height $media-preview-width-lg;
+		margin: 0 auto;
 	}
 
 	.vac-image-preview {