style: adjust textarea to fit mobile devices

Removed padding left and right, as textarea growed bigger then body on
mobile divces. Made it taller too. So it won't extend height of device
to much.

Signed-off-by: Conrad Zelck <git@simpel.cc>

style.css

@@ -99,7 +99,9 @@ label {
 
 textarea {
   font-size: larger;
-  width: calc(100vw - 8vmin);
-  height: 76vh;
+  width: 100%;
+  padding-left: 0;
+  padding-right: 0;
+  height: 50vh;
   margin-top: 2vmin;
 }