Merge pull request 'edit' (#137) from lyc-dev into main

src/renderer/src/views/teachingDesign/container/right.vue

@@ -484,8 +484,29 @@ onUnmounted(() => {
     .con-item {
       width: 100%;
       flex-direction: column;
-      margin-bottom: 20px;
+      padding-bottom: 20px;
-
+      position: relative;
+      padding-left: 15px;
+      box-sizing: border-box;
+      &::after{
+        content: '';
+        width: 15px;
+        height: 15px;
+        border-radius: 50%;
+        background: #409eff;
+        position: absolute;
+        left: -8px;
+        top: 5px;
+      }
+      &::before{
+        content: '';
+        width: 2px;
+        height: 100%;
+        background: #409eff;
+        position: absolute;
+        left: -1px;
+        top: 5px;
+      }
       .item-top {
         justify-content: space-between;
         align-items: center;