About page video improvements

frontend/.gitignore

@@ -54,6 +54,7 @@ src/resources/assets-testnet.json
 src/resources/assets-testnet.minimal.json
 src/resources/pools.json
 src/resources/mining-pools/*
+src/resources/*.mp4
 
 # environment config
 mempool-frontend-config.json

frontend/src/app/components/about/about.component.scss

@@ -36,6 +36,7 @@
 
   video {
     width: 640px;
+    height: 360px;
     max-width: 90%;
     margin-top: 0;
   }