PLT-5356 - Fixing margins for paragraphs (#5217)

* PLT-5356 - Fixing margins for paragraphs

* Fixing conflict

* Fixing font size for paragraphs

webapp/sass/layout/_post.scss

@@ -717,32 +717,22 @@
     .post--edited {
         p {
             &:last-child {
-                display: inline;
+                display: inline-block;
             }
         }
     }
 
     p {
-        font-size: .97em;
+        font-size: 13.5px;
         line-height: 1.6em;
         margin: 0;
         white-space: pre-wrap;
-
-        &:last-child {
-            margin-bottom: .5em;
-        }
     }
 
     .post__header--info {
         padding: 0;
     }
 
-    span {
-        p:last-child {
-            margin-bottom: .5em;
-        }
-    }
-
     &.post--root {
         .comment-icon__container {
             visibility: visible;
@@ -1023,7 +1013,7 @@
         }
 
         p + p {
-            margin: 1.2em 0;
+            margin: 1.2em 0 0;
 
             &:last-of-type {
                 margin-bottom: 0;
@@ -1036,7 +1026,7 @@
 
         ul,
         ol {
-            font-size: .97em;
+            font-size: 13.5px;
             margin-bottom: .4em;
             padding-left: 20px;