select focus style 변경

client/src/components/Form/StudyPlanEditForm.js

@@ -39,7 +39,7 @@ const StudyPlanEditForm = () => {
 
     return (
         <div className="pt-5">
-            <select className="form-select mb-4" aria-label="Default select example">
+            <select className={`form-select mb-4 ${styles.selectInput}`} aria-label="Choose subject">
                 <option selected>관련 과목을 선택해주세요.</option>
                 <option value="1">운영체제</option>
                 <option value="2">네트워크 프로그래밍 및 실습</option>

client/src/components/Form/form.module.scss

@@ -29,6 +29,13 @@
     }
 }
 
+.selectInput {
+    &:focus {
+        box-shadow: none;
+        border-color: crimson;
+    }
+}
+
 .textArea {
     resize: none;
     border: 1px solid #000;