replace homepage PNGs with SVGs

content/_index.html

@@ -14,19 +14,19 @@ <h1 class="small-title center-text mega-margin">#OurPhilosophy</h1>
     </div>
     <div class="small-container" id="emoji-cards">
         <div class="emoji-card">
-            <img src="assets/fire.png" alt="Fire emoji" class="emoji-img center-margin large-margin">
+            <img src="assets/fire.svg" alt="Fire emoji" class="emoji-img center-margin large-margin">
             <h1 class="center-text medium-margin">Heat</h1>
             <p class="center-text">Heat means work.<br/>Upstream contributions, bug fixes, designs, docs--the rigorous work that drives the community.</p>
         </div>
 
         <div class="emoji-card">
-            <img src="assets/sun.png" alt="Sun emoji" class="emoji-img center-margin large-margin">
+            <img src="assets/sun.svg" alt="Sun emoji" class="emoji-img center-margin large-margin">
             <h1 class="center-text medium-margin">Light</h1>
             <p class="center-text">Light means visibility. <br/>For the projects, contributions, opportunities, challenges, and people that impact the community.</p>
         </div>
 
         <div class="emoji-card">
-            <img src="assets/pride.png" alt="Pride heart emoji" class="emoji-img center-margin large-margin">
+            <img src="assets/heart.svg" alt="Pride heart emoji" class="emoji-img center-margin large-margin">
             <h1 class="center-text medium-margin">Love</h1>
             <p class="center-text">Love means culture and support.<br/>Why we care. How we work. Actions that grow the community.</p>
         </div>