Update notebook

Author: MalloryWittwer

.gitignore

@@ -27,6 +27,7 @@ venv/
 **/_version.py
 todo.txt
 *.ilp
+layouts/
 
 Submissions/**/*.tif
 Leaderboard/*.csv

marimo_dashboard.py

@@ -130,21 +130,16 @@ def _(challenges_dropdown):
     return gt_mask, gt_scatter
 
 
-@app.cell(hide_code=True)
-def _():
-    mo.md(r"""
-    ![logo](https://imaging.epfl.ch/resources/logo-for-gitlab.svg)
-    """)
-    return
-
-
 @app.cell(hide_code=True)
 def _():
     mo.hstack(
         [
-            mo.md("# Segmentation Challenge"), 
+            mo.vstack([
+                mo.md("![logo](https://imaging.epfl.ch/resources/logo-for-gitlab.svg)"),
+                mo.md("# Segmentation Challenge"),  
+            ]),
             mo.md("[➡️ GitHub repository](https://github.com/EPFL-Center-for-Imaging/segmentation-challenge)")
-        ]
+        ], align="end"
     )
     return