diff --git a/components/button/style/index.less b/components/button/style/index.less
index 903817690adc..1929c3484af2 100644
--- a/components/button/style/index.less
+++ b/components/button/style/index.less
@@ -24,8 +24,8 @@
   > i,
   > span {
     display: inline-block;
-    transition: margin-left 0.3s @ease-in-out;
     pointer-events: none;
+    transition: margin-left 0.3s @ease-in-out;
   }
 
   &-primary {
diff --git a/components/descriptions/style/index.less b/components/descriptions/style/index.less
index c29fceae2187..6282cd7533be 100644
--- a/components/descriptions/style/index.less
+++ b/components/descriptions/style/index.less
@@ -53,8 +53,8 @@
 
   &-item-no-label {
     &::after {
-      margin: 0;
       content: '';
+      margin: 0;
     }
   }
 
diff --git a/components/input/style/mixin.less b/components/input/style/mixin.less
index 4dafe941ab45..d98c2a52903f 100644
--- a/components/input/style/mixin.less
+++ b/components/input/style/mixin.less
@@ -370,20 +370,12 @@
     position: absolute;
     top: 50%;
     z-index: 2;
-    height: calc(100% - 2px);
     color: @input-color;
     line-height: 0;
-    background-color: #fff;
     transform: translateY(-50%);
     :not(.anticon) {
       line-height: @line-height-base;
     }
-    .anticon {
-      position: relative;
-      top: 50%;
-      vertical-align: top;
-      transform: translateY(-50%);
-    }
   }
 
   .@{inputClass}-prefix {
diff --git a/components/mentions/style/index.less b/components/mentions/style/index.less
index 29e43b62ec2b..8e2d5038ac07 100644
--- a/components/mentions/style/index.less
+++ b/components/mentions/style/index.less
@@ -11,9 +11,9 @@
   position: relative;
   display: inline-block;
   height: auto;
+  line-height: unset;
   padding: 0;
   overflow: hidden;
-  line-height: unset;
   white-space: pre-wrap;
   vertical-align: bottom;