Some icons and basic tweaks for the visuals

src/lib/components/Hero.svelte

@@ -1,4 +1,6 @@
 <script lang="ts">
+    import ExternalLinkIcon from './Icon/ExternalLink.svelte';
+    import FiletypePdfIcon from './Icon/FiletypePdf.svelte';
     import Logo from './Logo.svelte';
 </script>
 
@@ -13,20 +15,22 @@
         <div class="cta-group">
             <a
                 href="https://cal.mifi.ventures/the-mifi/30min?utm_source=website&utm_medium=cta&utm_campaign=schedule_call&utm_medium=hero_cta"
-                class="btn btn-primary"
+                class="btn btn-primary icon-button"
                 target="_blank"
                 rel="noopener noreferrer"
                 aria-label="Schedule a 30-minute intro call (opens in new tab)"
             >
                 Schedule a 30-minute intro call
+                <ExternalLinkIcon aria-label="Opens in new tab" size="17" />
             </a>
             <a
                 href="/downloads/resume.pdf"
-                class="btn btn-secondary"
+                class="btn btn-secondary icon-button"
                 download
                 aria-label="Download Mike Fitzpatrick's resume as PDF"
             >
                 Download resume
+                <FiletypePdfIcon aria-label="PDF format file" size="17" />
             </a>
         </div>
     </div>