fix for backgroud black (cross team report)

src/main/java/com/ffii/tsms/modules/report/service/ReportService.kt

@@ -2921,8 +2921,12 @@ open class ReportService(
 
                     createCell(1).apply {
                         setCellValue(team.code)
-                        cellStyle = normalFontWithBorderStyle
-                        CellUtil.setAlignment(this, HorizontalAlignment.CENTER)
+
+                        val cloneStyle = workbook.createCellStyle()
+                        cloneStyle.cloneStyleFrom(normalFontWithBorderStyle)
+                        cellStyle = cloneStyle.apply {
+                            alignment = HorizontalAlignment.CENTER
+                        }
                     }
 
                 }
@@ -2939,8 +2943,11 @@ open class ReportService(
                     sortedGrades.forEach { grade: Grade ->
                         createCell(columnIndex++).apply {
                             setCellValue(grade.name)
-                            cellStyle = boldFontWithBorderStyle
-                            CellUtil.setAlignment(this, HorizontalAlignment.CENTER)
+                            val cloneStyle = workbook.createCellStyle()
+                            cloneStyle.cloneStyleFrom(boldFontWithBorderStyle)
+                            cellStyle = cloneStyle.apply {
+                                alignment = HorizontalAlignment.CENTER
+                            }
                         }
                     }
 
@@ -2965,8 +2972,11 @@ open class ReportService(
                             columnIndex = 0
                             createCell(columnIndex++).apply {
                                 setCellValue(chargedTeam.code)
-                                cellStyle = normalFontWithBorderStyle
-                                CellUtil.setAlignment(this, HorizontalAlignment.CENTER)
+                                val cloneStyle = workbook.createCellStyle()
+                                cloneStyle.cloneStyleFrom(normalFontWithBorderStyle)
+                                cellStyle = cloneStyle.apply {
+                                    alignment = HorizontalAlignment.CENTER
+                                }
                             }
 
                             var totalSalary = 0.0
@@ -2993,14 +3003,21 @@ open class ReportService(
                             createCell(columnIndex++).apply {
                                 val lastCellLetter = CellReference.convertNumToColString(this.columnIndex - 1)
                                 cellFormula = "sum(B${this.rowIndex + 1}:${lastCellLetter}${this.rowIndex + 1})"
-                                cellStyle = boldFontWithBorderStyle
-                                cellStyle.dataFormat = accountingStyle
+
+                                val cloneStyle = workbook.createCellStyle()
+                                cloneStyle.cloneStyleFrom(boldFontWithBorderStyle)
+                                cellStyle = cloneStyle.apply {
+                                    dataFormat = accountingStyle
+                                }
                             }
 
                             createCell(columnIndex).apply {
                                 setCellValue(totalSalary)
-                                cellStyle = boldFontWithBorderStyle
-                                cellStyle.dataFormat = accountingStyle
+                                val cloneStyle = workbook.createCellStyle()
+                                cloneStyle.cloneStyleFrom(boldFontWithBorderStyle)
+                                cellStyle = cloneStyle.apply {
+                                    dataFormat = accountingStyle
+                                }
                             }
                         }
                     }