FIX unify the units css. (#499)

* FIX unify the units css.
* Fix units css font-size.

frontend/src/app/components/latest-blocks/latest-blocks.component.html

@@ -21,7 +21,7 @@
         <td>
           <div class="progress">
             <div class="progress-bar progress-mempool {{ network$ | async }}" role="progressbar" [ngStyle]="{'width': (block.weight / 4000000)*100 + '%' }"></div>
-            <div class="progress-text">{{ block.size | bytes: 2 }}</div>
+            <div class="progress-text" [innerHTML]="block.size | bytes: 2"></div>
           </div>
         </td>
       </tr>