Fix images for keynotes

Author: liZe

static/css/style.css

@@ -433,6 +433,7 @@ aside.subtitle {
       img {
         border-radius: 1em 1em 0 0;
         height: 20em;
+        object-fit: cover;
         width: 100%;
       }
 
@@ -821,10 +822,13 @@ aside.subtitle {
 
   #schedule {
     .keynotes {
-      display: initial;
+      align-items: center;
+      flex-direction: column;
+      gap: 1em;
 
       dl {
-        width: 100%;
+        max-width: 100%;
+        width: 25em;
       }
     }
   }