[Fix] UI Fixes (#266)

Rather than have a bunch of pull-requests that @jebus will have to merge shall we collect some of the fixes for the UI issues I found in here.

- [x] #259
- [x] #260
- [x] #261
- [x] #262
- [x] #263
- [x] #264
- [x] #265

Co-authored-by: Tobias O <tobias.olenyi@envipath.com>
Reviewed-on: enviPath/enviPy#266
Co-authored-by: Liam Brydon <lbry121@aucklanduni.ac.nz>
Co-committed-by: Liam Brydon <lbry121@aucklanduni.ac.nz>

static/css/input.css

@@ -34,23 +34,3 @@
 }
 
 @import "./daisyui-theme.css";
-
-/* Loading Spinner - Benzene Ring */
-.benzene-spinner {
-  display: flex;
-  justify-content: center;
-  align-items: center;
-  padding: 2rem;
-}
-
-.benzene-spinner svg {
-  width: 48px;
-  height: 48px;
-  animation: spin 3s linear infinite;
-}
-
-@keyframes spin {
-  100% {
-    transform: rotate(360deg);
-  }
-}