change css `#connections` to be better readable

sugarcube/src/npcs/NPCsSidebar.css

@@ -15,6 +15,7 @@
 */
 #connections .connectedLocation{
 	position: relative;
+	height: 8em;
 }
 
 #connections>.connectedLocation>a {
@@ -28,6 +29,9 @@
 
 #connections .connectedLocation img{
 	width: 100%;
+	filter: grayscale(80%);
+	object-fit: cover;
+	height: 100%;
 }
 
 #connections>.connectedLocation>.duration_label {
@@ -44,7 +48,6 @@
 	transition-delay: 0.5s;
 }
 
-#connections .connectedLocation,
 #npcs .linkedImage {
 	height: unset;
 }