diff --git a/src/renderers/GridRenderer.ts b/src/renderers/GridRenderer.ts
index 51913cb..74122c0 100644
--- a/src/renderers/GridRenderer.ts
+++ b/src/renderers/GridRenderer.ts
@@ -99,6 +99,7 @@ export class GridRenderer {
     }
 
     timeAxisContent.appendChild(fragment);
+    timeAxisContent.style.top = '-1px';
     timeAxis.appendChild(timeAxisContent);
     return timeAxis;
   }
@@ -176,62 +177,6 @@ export class GridRenderer {
       this.renderColumnContainer(columnContainer as HTMLElement, currentDate, resourceData, view);
     }
   }
-
-  /**
-   * Setup grid-only event listeners (column events)
-  
-  private setupGridEventListeners(): void {
-    // Setup grid body mouseover listener for all-day to timed conversion
-    this.setupGridBodyMouseOver();
-  }
- */
-  /**
-   * Setup grid body mouseover listener for all-day to timed conversion
-   
-  private setupGridBodyMouseOver(): void {
-    const grid = this.cachedGridContainer;
-    if (!grid) return;
-    
-    const columnContainer = grid.querySelector('swp-day-columns');
-    if (!columnContainer) return;
-    
-    // Throttle for better performance
-    let lastEmitTime = 0;
-    const throttleDelay = 16; // ~60fps
-    
-    const gridBodyEventListener = (event: Event) => {
-      const now = Date.now();
-      if (now - lastEmitTime < throttleDelay) {
-        return;
-      }
-      lastEmitTime = now;
-      
-      const target = event.target as HTMLElement;
-      const dayColumn = target.closest('swp-day-column');
-      
-      if (dayColumn) {
-        const targetColumn = (dayColumn as HTMLElement).dataset.date;
-        if (targetColumn) {
-          // Calculate Y position relative to the column
-          const columnRect = dayColumn.getBoundingClientRect();
-          const mouseY = (event as MouseEvent).clientY;
-          const targetY = mouseY - columnRect.top;
-          
-          eventBus.emit('column:mouseover', {
-            targetColumn,
-            targetY
-          });
-        }
-      }
-    };
-    
-    columnContainer.addEventListener('mouseover', gridBodyEventListener);
-    
-    // Store reference for cleanup
-    (this as any).gridBodyEventListener = gridBodyEventListener;
-    (this as any).cachedColumnContainer = columnContainer;
-  }
-*/
   /**
    * Create navigation grid container for slide animations
    * Now uses same implementation as initial load for consistency
diff --git a/wwwroot/css/calendar-layout-css.css b/wwwroot/css/calendar-layout-css.css
index d341193..a83d7ef 100644
--- a/wwwroot/css/calendar-layout-css.css
+++ b/wwwroot/css/calendar-layout-css.css
@@ -50,11 +50,13 @@ swp-calendar-container {
 swp-header-spacer {
   grid-column: 1;
   grid-row: 1;
-  height: calc(var(--header-height) + var(--all-day-row-height)); /* Dynamic height including all-day events */
+  height: calc(var(--header-height) + var(--all-day-row-height));
+  /* Dynamic height including all-day events */
   background: var(--color-surface);
   border-right: 1px solid var(--color-border);
   border-bottom: 1px solid var(--color-border);
-  z-index: 5; /* Higher than time-axis to cover it when scrolling */
+  z-index: 5;
+  /* Higher than time-axis to cover it when scrolling */
   position: relative;
 }
 
@@ -117,7 +119,8 @@ swp-time-axis {
   border-right: 1px solid var(--color-border);
   position: relative;
   left: 0;
-  z-index: 3; /* Lower than header elements so it scrolls behind them */
+  z-index: 3;
+  /* Lower than header elements so it scrolls behind them */
   width: 60px;
   overflow: hidden;
   height: 100%;
@@ -148,12 +151,15 @@ swp-hour-marker::before {
   position: absolute;
   top: -1px;
   left: 50px;
-  width: calc(100vw - 60px); /* Full viewport width minus time-axis width */
+  width: calc(100vw - 60px);
+  /* Full viewport width minus time-axis width */
   height: 1px;
   background: var(--color-hour-line);
   pointer-events: none;
-  z-index: 2; /* Ensure it appears above other elements */
+  z-index: 2;
+  /* Ensure it appears above other elements */
 }
+
 /* Add hour lines to time-grid as background */
 swp-time-grid::after {
   content: '';
@@ -162,14 +168,13 @@ swp-time-grid::after {
   left: 0;
   right: 0;
   bottom: 0;
-  min-width: calc(var(--grid-columns, 7) * var(--day-column-min-width)); /* Dynamic width like swp-grid-lines */
-  background-image: repeating-linear-gradient(
-    to bottom,
-    transparent,
-    transparent calc(var(--hour-height) - 1px),
-    var(--color-hour-line) calc(var(--hour-height) - 1px),
-    var(--color-hour-line) var(--hour-height)
-  );
+  min-width: calc(var(--grid-columns, 7) * var(--day-column-min-width));
+  /* Dynamic width like swp-grid-lines */
+  background-image: repeating-linear-gradient(to bottom,
+      transparent,
+      transparent calc(var(--hour-height) - 1px),
+      var(--color-hour-line) calc(var(--hour-height) - 1px),
+      var(--color-hour-line) var(--hour-height));
   pointer-events: none;
   z-index: 1;
 }
@@ -178,40 +183,48 @@ swp-time-grid::after {
 swp-calendar-header {
   display: grid;
   grid-template-columns: repeat(var(--grid-columns, 7), minmax(var(--day-column-min-width), 1fr));
-  grid-template-rows: var(--header-height) auto; /* Row 1: header height, Row 2: auto for all-day events */
-  min-width: calc(var(--grid-columns, 7) * var(--day-column-min-width)); /* Dynamic width */
+  grid-template-rows: var(--header-height) auto;
+  /* Row 1: header height, Row 2: auto for all-day events */
+  min-width: calc(var(--grid-columns, 7) * var(--day-column-min-width));
+  /* Dynamic width */
   background: var(--color-surface);
   border-bottom: 1px solid var(--color-border);
   position: sticky;
   top: 0;
-  z-index: 3; /* Lower than header-spacer so it slides under during horizontal scroll */
-  height: calc(var(--header-height) + var(--all-day-row-height)); /* Same calculation as spacers */
-  
+  z-index: 3;
+  /* Lower than header-spacer so it slides under during horizontal scroll */
+  height: calc(var(--header-height) + var(--all-day-row-height));
+  /* Same calculation as spacers */
+
   /* Force scrollbar to appear for alignment */
   overflow-y: scroll;
   overflow-x: hidden;
-  
-  /* Firefox - hide scrollbar but keep space */
-  scrollbar-width: auto; /* Normal width to match content scrollbar */
 
-/* All-day events container */
-swp-allday-container {
-  grid-column: 1 / -1;
-  grid-row: 2;
-  display: grid;
-  grid-template-columns: repeat(var(--grid-columns, 7), minmax(var(--day-column-min-width), 1fr));
-  grid-auto-rows: var(--single-row-height); /* Each row is exactly SINGLE_ROW_HEIGHT */
-  gap: 2px 0px;
-  padding: 0px;
-  align-items: center;
-  overflow: hidden;
-}
+  /* Firefox - hide scrollbar but keep space */
+  scrollbar-width: auto;
+  /* Normal width to match content scrollbar */
+
+  /* All-day events container */
+  swp-allday-container {
+    grid-column: 1 / -1;
+    grid-row: 2;
+    display: grid;
+    grid-template-columns: repeat(var(--grid-columns, 7), minmax(var(--day-column-min-width), 1fr));
+    grid-auto-rows: var(--single-row-height);
+    /* Each row is exactly SINGLE_ROW_HEIGHT */
+    gap: 2px 0px;
+    padding: 0px;
+    align-items: center;
+    overflow: hidden;
+  }
+
   scrollbar-color: transparent transparent;
 }
 
 /* WebKit browsers (Chrome, Safari, Edge) - hide scrollbar but keep space */
 swp-calendar-header::-webkit-scrollbar {
-  width: 17px; /* Match system default scrollbar width */
+  width: 17px;
+  /* Match system default scrollbar width */
   background: transparent;
 }
 
@@ -225,8 +238,10 @@ swp-calendar-header::-webkit-scrollbar-track {
 
 
 swp-day-header {
-  grid-row: 1; /* Explicitly place day headers in row 1 */
-  pointer-events: auto; /* Ensure header clicks work despite parent scrollbar */
+  grid-row: 1;
+  /* Explicitly place day headers in row 1 */
+  pointer-events: auto;
+  /* Ensure header clicks work despite parent scrollbar */
   text-align: center;
   border-right: 1px solid var(--color-grid-line);
   border-bottom: 1px solid var(--color-grid-line);
@@ -313,29 +328,34 @@ swp-day-header[data-today="true"] swp-day-date {
 /* Ghost columns for mouseenter events */
 swp-allday-column {
   position: relative;
-  opacity: 0; /* Invisible but functional */
-  pointer-events: auto; /* Enable mouse events */
+  opacity: 0;
+  /* Invisible but functional */
+  pointer-events: auto;
+  /* Enable mouse events */
   background: transparent;
-  z-index: 1; /* Below all-day events */
+  z-index: 1;
+  /* Below all-day events */
   height: 100%;
 }
 
 /* All-day events in containers */
 swp-allday-container swp-allday-event {
-  height: 22px !important; /* Fixed height for consistent stacking */
+  height: 22px !important;
+  /* Fixed height for consistent stacking */
   position: relative !important;
   width: auto !important;
   left: auto !important;
   right: auto !important;
   top: auto !important;
-      margin: 1px;
+  margin: 1px;
   padding: 2px 4px;
   overflow: hidden;
   white-space: nowrap;
   text-overflow: ellipsis;
   background: hsl(208, 100%, 50%);
   display: flex;
-  z-index: 2; /* Above ghost columns */
+  z-index: 2;
+  /* Above ghost columns */
   align-items: center;
   justify-content: flex-start;
   color: #fff;
@@ -389,12 +409,12 @@ swp-allday-container swp-allday-event.max-event-overflow-hide {
 }
 
 /* Hide time element for all-day styled events */
-swp-allday-container swp-allday-event swp-event-time{
+swp-allday-container swp-allday-event swp-event-time {
   display: none;
 }
 
 /* Adjust title display for all-day styled events */
-swp-allday-container swp-allday-event swp-event-title  {
+swp-allday-container swp-allday-event swp-event-title {
   display: block;
   font-size: 12px;
   line-height: 18px;
@@ -407,6 +427,7 @@ swp-scrollable-content {
   scroll-behavior: smooth;
   position: relative;
   display: grid;
+  top: -1px;
   /* Height and width will be set dynamically by ScrollManager via ResizeObserver */
 }
 
@@ -431,7 +452,8 @@ swp-scrollable-content::-webkit-scrollbar-thumb:hover {
 
 /* Style native scrollbars for Firefox */
 swp-scrollable-content {
-  scrollbar-width: auto; /* Let it use the webkit width */
+  scrollbar-width: auto;
+  /* Let it use the webkit width */
   scrollbar-color: var(--scrollbar-color, #666) var(--scrollbar-track-color, #f0f0f0);
 }
 
@@ -458,7 +480,8 @@ swp-time-grid::before {
   background: transparent;
   min-width: calc(var(--grid-columns, 7) * var(--day-column-min-width));
   pointer-events: none;
-  display: none; /* Disabled - using per-column overlays instead */
+  display: none;
+  /* Disabled - using per-column overlays instead */
 }
 
 /* Grid lines */
@@ -468,16 +491,15 @@ swp-grid-lines {
   left: 0;
   right: 0;
   bottom: 0;
-  min-width: calc(var(--grid-columns, 7) * var(--day-column-min-width)); /* Dynamic width */
+  min-width: calc(var(--grid-columns, 7) * var(--day-column-min-width));
+  /* Dynamic width */
   pointer-events: none;
   z-index: var(--z-grid);
-  background-image: repeating-linear-gradient(
-    to bottom,
-    transparent,
-    transparent calc(var(--hour-height) / 4 - 1px),
-    var(--color-grid-line-light) calc(var(--hour-height) / 4 - 1px),
-    var(--color-grid-line-light) calc(var(--hour-height) / 4)
-  );
+  background-image: repeating-linear-gradient(to bottom,
+      transparent,
+      transparent calc(var(--hour-height) / 4 - 1px),
+      var(--color-grid-line-light) calc(var(--hour-height) / 4 - 1px),
+      var(--color-grid-line-light) calc(var(--hour-height) / 4));
 }
 
 
@@ -487,7 +509,8 @@ swp-day-columns {
   inset: 0;
   display: grid;
   grid-template-columns: repeat(var(--grid-columns, 7), minmax(var(--day-column-min-width), 1fr));
-  min-width: calc(var(--grid-columns, 7) * var(--day-column-min-width)); /* Dynamic width */
+  min-width: calc(var(--grid-columns, 7) * var(--day-column-min-width));
+  /* Dynamic width */
 }
 
 
@@ -508,7 +531,7 @@ swp-day-column::before {
   background: var(--color-non-work-hours);
   pointer-events: none;
   z-index: 2;
-  
+
   /* Before work period - from day start to work start */
   top: 0;
   height: var(--before-work-height, 0px);
@@ -524,7 +547,7 @@ swp-day-column::after {
   background: var(--color-non-work-hours);
   pointer-events: none;
   z-index: 2;
-  
+
   /* After work period - from work end to day end */
   top: var(--after-work-top, 100%);
   bottom: 0;
@@ -562,7 +585,8 @@ swp-events-layer {
   inset: 0;
   display: block;
   z-index: var(--z-event);
-  pointer-events: none; /* Allow clicks to pass through to day column */
+  pointer-events: none;
+  /* Allow clicks to pass through to day column */
 }
 
 swp-day-columns swp-event {
@@ -578,7 +602,7 @@ swp-current-time-indicator {
   background: var(--color-current-time);
   pointer-events: none;
   z-index: var(--z-current-time);
-  
+
   /* Time label */
   &::before {
     content: attr(data-time);
@@ -592,7 +616,7 @@ swp-current-time-indicator {
     border-radius: 3px;
     white-space: nowrap;
   }
-  
+
   /* Animated dot */
   &::after {
     content: '';
@@ -614,4 +638,4 @@ swp-calendar-container.week-transition {
 
 swp-calendar-container.week-transition-out {
   opacity: 0.5;
-}
+}
\ No newline at end of file