Fix pills.

This was a hard pill to swallow

res/css/views/rooms/_Autocomplete.scss

@@ -31,9 +31,10 @@
 }
 
 .mx_Autocomplete_Completion_pill {
-    border-radius: 17px;
-    height: 34px;
-    padding: 0px 5px;
+    box-sizing: border-box;
+    border-radius: 2rem;
+    height: $font-34px;
+    padding: 0.4rem;
     display: flex;
     user-select: none;
     cursor: pointer;
@@ -42,7 +43,7 @@
 }
 
 .mx_Autocomplete_Completion_pill > * {
-    margin: 0 3px;
+    margin-right: 0.3rem;
 }
 
 /* styling for common completion elements */

res/css/views/rooms/_BasicMessageComposer.scss

@@ -46,22 +46,19 @@ limitations under the License.
 
         &.mx_BasicMessageComposer_input_shouldShowPillAvatar {
             span.mx_UserPill, span.mx_RoomPill {
-                padding-left: 21px;
                 position: relative;
 
                 // avatar psuedo element
                 &::before {
-                    position: absolute;
-                    left: 2px;
-                    top: 2px;
                     content: var(--avatar-letter);
-                    width: 16px;
-                    height: 16px;
+                    width: $font-16px;
+                    height: $font-16px;
+                    margin-right: 0.24rem;
                     background: var(--avatar-background), $avatar-bg-color;
                     color: $avatar-initial-color;
                     background-repeat: no-repeat;
-                    background-size: 16px;
-                    border-radius: 8px;
+                    background-size: $font-16px;
+                    border-radius: $font-16px;
                     text-align: center;
                     font-weight: normal;
                     line-height: $font-16px;