diff --git a/src/components/slider/index.vue b/src/components/slider/index.vue
index 9ed7241..f7d7e92 100644
--- a/src/components/slider/index.vue
+++ b/src/components/slider/index.vue
@@ -496,6 +496,7 @@ const progressValue = computed(() => {
     width: 4px;
     height: 4px;
     border-radius: 50%;
+    box-sizing: content-box;
     background-color: #fff;
     border: 2px solid black;
     position: absolute;