chore: updates by dingyi's feedbacks

src/routes/chat/Layout/Operations.js

@@ -28,6 +28,9 @@ const Styled = styled.div`
     &:disabled svg path {
       fill: #ccc;
     }
+    &:hover {
+      background: #eaecf0;
+    }
   }
   .close {
     cursor: pointer;

src/routes/chat/Layout/styled.js

@@ -19,6 +19,7 @@ const Styled = styled.article`
     justify-content: space-between;
     position: relative;
     > .chat {
+      border-bottom-right-radius: 16px;
       width: 100%;
       background-color: #fff;
       display: flex;