fix: polish the endpoint list graph (#155)

src/views/dashboard/graphs/InstanceList.vue

@@ -18,12 +18,11 @@ limitations under the License. -->
       <el-input
         v-model="searchText"
         placeholder="Please input instance name"
-        size="small"
         @change="searchList"
         class="inputs"
       >
         <template #append>
-          <el-button size="small" @click="searchList">
+          <el-button class="btn" @click="searchList">
             <Icon size="sm" iconName="search" />
           </el-button>
         </template>
@@ -243,14 +242,6 @@ watch(
 <style lang="scss" scoped>
 @import "./style.scss";
 
-.chart {
-  height: 60px;
-}
-
-.inputs {
-  width: 300px;
-}
-
 .attributes {
   max-height: 400px;
   overflow: auto;