杂音类型下拉样式优化

src/common/less/variables.less

@@ -85,7 +85,7 @@
   background-position: 20px 10px;
 }
 .clear{
-  width: 88px;
+  width: 60px;
   height: 44px;
   line-height: 44px;
   font-size: 12px;
@@ -96,6 +96,7 @@
   outline: none;
   text-align: center;
   cursor: pointer;
+  margin-left: 22px;
 }
 .confirm{
   width: 120px;

src/components/SearchDrop/index.less

@@ -1,5 +1,7 @@
 @import "~@less/variables.less";
 .list{
+  max-height:300px;
+  overflow-y: auto;
   .pop;
   left: 85px;
   padding: 0 0 10px;

src/components/SpreadDrop/index.less

@@ -6,7 +6,7 @@
 }
 .drop-list{
   .pop;
-  padding:20px;
+  padding:20px 20px 20px 0;
   .row{
     display: inline-block;
     // width: 200px;
@@ -21,7 +21,7 @@
     border-bottom: 1px @disable-border-color solid;
   }
   li{
-    padding-left: 40px;
+    padding-left: 20px;
     cursor: pointer;
     .mult-li;
   }