refined code

src/sass/tweet/_base.scss

@@ -97,15 +97,17 @@
     }
 }
 
-.avatar-round {
-    border-radius: 50%;
-}
-
-.avatar.mini {
-    margin-right: 5px;
-    margin-top: -1px;
-    width: 20px;
-    height: 20px;
+.avatar {
+    &.round {
+        border-radius: 50%;
+    }
+    
+    &.mini {
+        margin-right: 5px;
+        margin-top: -1px;
+        width: 20px;
+        height: 20px;
+    }
 }
 
 .attribution {

src/views/tweet.nim

@@ -32,11 +32,9 @@ proc renderHeader(tweet: Tweet; retweet: string; prefs: Prefs): VNode =
         if not prefs.autoplayGifs and tweet.profile.userPic.endsWith("gif"):
           size = "_400x400"
 
-        let avatarClass =
-          if prefs.squareProfileImages: "avatar"
-          else: "avatar avatar-round"
+        let round = if prefs.squareProfileImages: "" else: " round"
         
-        genImg(tweet.profile.getUserPic(size), class=avatarClass)
+        genImg(tweet.profile.getUserPic(size), class=(&"avatar{round}"))
 
       tdiv(class="tweet-name-row"):
         tdiv(class="fullname-and-username"):