diff --git a/src/main/resources/templates/select_course.html b/src/main/resources/templates/select_course.html
index bf0bf62..1a42b25 100644
--- a/src/main/resources/templates/select_course.html
+++ b/src/main/resources/templates/select_course.html
@@ -14,7 +14,7 @@
 	
 	
 	<form th:action="${mode == 'regist'} ? @{/user/register/return}: @{/change}" method="post">  
-		<button type="submit" class="btn btn-primary">確定</button>
+		<button type="submit" class="btn btn-primary w-100">確定</button>
 
 		<div class="accordion" id="accordionExample">
 		  <div class="accordion-item" th:each="course:${courseList}">
@@ -27,7 +27,7 @@
 		    <div th:id="'collapse' + ${course.courseId}" class="accordion-collapse collapse" data-bs-parent="#accordionExample">
 		      <div class="accordion-body">
 		        <span th:text="${course.description}"></span>
-				<table border="1">
+				<table class="table table-bordered">
 					<tr>
 						<th>カテゴリ名</th><th>配分(%)</th>
 					</tr>