SDA-4002 About symphony modal css update to support JP content

src/renderer/styles/about-app.less

@@ -111,6 +111,7 @@ body {
     margin-bottom: 32px;
     grid-area: main;
     max-width: 100%;
+    width: 100%;
   }
 
   &-copy-container {
@@ -168,10 +169,11 @@ body {
     background-color: @electricity-ui-50;
     color: @electricity-ui-05;
     cursor: pointer;
-    padding: 12px 118px;
     box-sizing: border-box;
     text-transform: uppercase;
     font-weight: 600;
+    width: 100%;
+    height: 36px;
 
     &:focus {
       box-shadow: 0 0 10px rgba(61, 162, 253, 1);