完善有前后按钮的input

node_module/element-theme-chalk/src/input.scss

@@ -286,10 +286,8 @@
     position: relative;
     border: $--border-base;
     border-radius: $--input-border-radius;
-    padding: 0 8px;
     width: 1px;
     white-space: nowrap;
-    font-size: 12px;
 
     &:focus {
       outline: none;
@@ -320,12 +318,15 @@
     border-right: 0;
     border-top-right-radius: 0;
     border-bottom-right-radius: 0;
+    padding: 0 8px;
+    font-size: 12px;
   }
 
   @include e(append) {
     border-left: 0;
     border-top-left-radius: 0;
     border-bottom-left-radius: 0;
+    padding: 0 16px;
 
     &:hover{
       border-color: $--color-primary-hover;