style：采购单位搜索输入框样式

src/web/staticres/pccss/pur-search-index-pc.css

@@ -69,6 +69,7 @@
     padding-left: 44px;
     height: 36px;
     line-height: 36px;
+    border-radius: 8px 0 0 8px;
 }
 .input-prefix-icon {
     display: flex;
@@ -79,7 +80,7 @@
     display: block;
 }
 .input-container .el-input-group {
-    width: 640px;
+    width: 528px;
 }
 .input-container .el-input__inner,
 .input-container .el-input-group__append {
@@ -91,6 +92,7 @@
     font-size: 16px;
     color: #fff;
     background-color: #2cb7ca;
+    border-radius: 0 8px 8px 0;
 }
 .pre-search-list {
     padding: 20px 0;