diff --git a/_data/spring.yml b/_data/spring.yml
index 99be842..20d2059 100644
--- a/_data/spring.yml
+++ b/_data/spring.yml
@@ -1,3 +1,10 @@
+# speaker to id mapping:
+# behl : 1
+# chiribiri : 2
+# knoll : 3
+# wech : 4
+# wolfgang : 5
+
 days:
     -   title: "Monday 7th April 2025"
         date: '2025-04-07'
@@ -7,7 +14,7 @@ days:
                 end_time: "09:00"
                 color: "#3788d8"
                 id: 1
-                speaker_idx: 4
+                speaker_idx: 4 #
                 description: 'This talk focuses on numerical computations to determine the heat shock a patient would get while going through an MRI.'
             -   title: "Welcome Ceremony"
                 start_time: "09:00"
diff --git a/spring_school_2025/detailed_program_schedule.md b/spring_school_2025/detailed_program_schedule.md
index efcdbd6..42697ff 100644
--- a/spring_school_2025/detailed_program_schedule.md
+++ b/spring_school_2025/detailed_program_schedule.md
@@ -12,7 +12,7 @@ sidebar:
         <div class="spring-school-day">
             <h2>{{day.title}}</h2>
             {% for session in day.sessions%}
-                <div class="session-box" id="{{session.id}}" style="background-color: {{session.color}}; border-radius: 8px">
+                <div class="session-box" id="{{session.id}}" style="background-color: {{session.color}}; border-radius: 4px; padding: 6px; border: 1px solid gray;">
                     <div class="session-title" style="display: flex;">
                         <div style="flex-shrink: 0; margin-left: 8px;">{{session.start_time}} - {{session.end_time}}</div>
                         <div style="margin-left: 12px">
diff --git a/spring_school_2025/program_overview.md b/spring_school_2025/program_overview.md
index ed48270..d7467d4 100644
--- a/spring_school_2025/program_overview.md
+++ b/spring_school_2025/program_overview.md
@@ -12,7 +12,7 @@ A detailed schedule with the description of each session will be provided at a l
 
 Please also note that the schedule is preliminary and subject to change.
 
-Click on each event below to know more, and for detailed information about all events please click <a href="/spring_school_2025/detailed_program_schedule">here</a>.
+<p style="color: red">Click on each event below to know more, and for detailed information about all events please click <a href="/spring_school_2025/detailed_program_schedule">here</a>.</p>
 
 
 <full-calendar shadow style="font-weight: normal; font-size: 16px; color: black;" options='{