Fix padding woes

pico.css

 }
 .media {
     grid-area: media;
-    position: relative;
 }
 #textbox {
     resize: none;
     overflow-x: scroll;
     height: 200px;
     resize: vertical;
+    position: relative;
 }
 .video-container {
     display: inline-block;
         ;
         grid-template-columns: 1fr 4fr;
         grid-template-rows: auto 1fr auto;
-        height: 100vh;
-        width: 100vw;
+        height: calc(100vh - 2 * var(--pad));
     }
 }