Enhanced Spacing for Improved Component Layout

In response to user feedback, this commit addresses the spacing concerns within the GetNighthawk website's UI. The existing design was visually appealing but lacked sufficient spacing between certain components.

Changes Made:
- Added margin-bottom to the analysis, distribution, and standards-based cards to create a clear distinction between them and improve readability.
- Introduced appropriate spacing between the 'Nighthawk & Meshery' section and the 'Layer 7 Performance Analysis' division to enhance the overall visual balance.

These adjustments have been carefully implemented to maintain the smooth and polished UI while ensuring a more comfortable viewing experience for users. The improved spacing creates a harmonious layout, allowing each component to breathe and stand out effectively.

Resolves Issue: #290

Signed-off-by: Akhilender [email protected]

docs/_sass/getnighthawk.scss

@@ -5533,7 +5533,7 @@ div.globalFooterCard.card-environment {
   display: grid;
   grid-template-columns: 1fr 1fr 1fr;
   grid-template-rows: auto;
-  margin: 2rem 0rem;
+  margin: 2rem 0rem 12rem 0rem;
   padding: 2rem 0rem;
   .card-item {
     display: flex;

docs/_sass/index.scss

@@ -217,7 +217,7 @@ $blue-munsell-3: #4392a4ff;
 // nighthawk-description startups
 
 .nighthawk-description-div {
-  margin: -23rem auto 3rem auto;
+  margin: -23rem auto 12rem auto;
   z-index: 1;
 }
 .description-div {