Few style updates per PR feedback

app/assets/sass/uswds/_uswds-theme-custom-styles.scss

@@ -312,24 +312,15 @@ td.table-empty-message {
 
 .dashboard {
    .big-number-with-status {
-      // a {
-      //    background: color("blue-60v");
-      //    padding: units(2);
-      //    margin-bottom: units(1);
-      //    text-decoration: none;
-      //    &:hover{
-      //       background: color("blue-warm-70v");
-      //    }
-      // }
       .big-number-smaller {
          display: flex;
          flex-direction: column;
          .big-number-number {
                font-size: units(5);
-               line-height: units(6);
+               line-height: units(5);
          }
          .big-number-label {
-               font-size: units(3);
+               font-size: units(2.5);
          }
       }
       .big-number-status {

app/templates/views/dashboard/_totals.html

@@ -1,6 +1,6 @@
 <div class="ajax-block-container">
   <div class="grid-row grid-gap">
-    <div id="total-sms" class="grid-col-12">
+    <div id="total-sms" class="grid-col-12 margin-top-2">
       <span class="big-number-with-status display-block margin-bottom-2">
         <p>
           <span class="big-number-smaller">

app/templates/views/dashboard/dashboard.html

@@ -18,7 +18,7 @@
 
     {{ ajax_block(partials, updates_url, 'upcoming') }}
 
-    <h2 class="font-body-xl margin-0">
+    <h2 class="font-body-2xl line-height-sans-2 margin-0">
       Messages sent
     </h2>