diff --git a/src/steps/index.less b/src/steps/index.less
index 07e13ea..ce2166c 100644
--- a/src/steps/index.less
+++ b/src/steps/index.less
@@ -188,6 +188,7 @@
           width: 7px;
           height: 7px;
           border-radius: 50%;
+          z-index: 10;
 
           &-normal {
             border: 1px solid var(--ti-mobile-steps-unselected-text-color);
@@ -218,15 +219,22 @@
           position: absolute;
           cursor: pointer;
           right: 16px;
-          width: 8px;
-          height: 8px;
-          border-color: var(--ti-mobile-steps-arrow-btn-border-color);
-          border-style: solid;
-          border-width: 1.5px 1.5px 0 0;
-          transform: rotate(-45deg);
-
-          &-fold {
-            transform: rotate(135deg);
+          width: 20px;
+          height: 20px;
+          display: flex;
+          justify-content: center;
+          align-items: center;
+
+          &-arrow {
+            width: 8px;
+            height: 8px;
+            border-color: var(--ti-mobile-steps-arrow-btn-border-color);
+            border-style: solid;
+            border-width: 2px 2px 0 0;
+            transform: rotate(-45deg);
+            &-fold {
+              transform: rotate(135deg);
+            }
           }
         }
       }
@@ -245,7 +253,7 @@
         left: 3px;
         top: 0;
         bottom: 0;
-        z-index: -1;
+        z-index: 1;
 
         .@{css-prefix}svg {
           vertical-align: baseline;