Add vertical padding for Section component

Author: kylemh

src/shared/components/join/join.css

@@ -12,4 +12,4 @@
   max-width:700px;
   font-size:20px;
   color:#47566B;
-}
+}

src/shared/components/section/section.css

@@ -1,9 +1,10 @@
 .section {
   width: 100%;
+  min-height: 250px;
   display: flex;
   flex-direction: column;
   align-items: center;
-  padding: 15px 0 15px 0;
+  padding: 4% 0 4% 0;
 }
 
 .gray {