fix(测试跟踪): 【测试跟踪】功能用例-依赖关系-屏幕有多余横杠显示

--bug=1032895 --user=白奇 【测试跟踪】功能用例-依赖关系-屏幕有多余横杠显示 https://www.tapd.cn/55049933/s/1436838

framework/sdk-parent/frontend/src/styles/business/main.css

@@ -143,10 +143,24 @@ textarea {
   border-color: white !important;
 }
 
-.adjust-table:after {
-  background-color: white !important;
+.adjust-table:before {
+  display: none;
 }
 
+.adjust-table:after {
+  display: block;
+  height: 1px !important;
+  width: 100% !important;
+  position: sticky !important;
+  bottom: 0 !important;
+  background-color: #EBEEF5;
+}
+.el-table__fixed-right::before {
+  display: none;
+}
+.el-table__row:last-child td {
+  border-bottom: 0 !important;
+}
 .adjust-table th:not([class*="el-table-column--selection"]):hover:after {
   content: '';
   position: absolute;