Fix: Header, Footer grid

src/web/module/header.html

@@ -1,22 +1,13 @@
 <nav class="navbar navbar-expand-lg navbar-dark bg-dark py-3">
 	<div class="container">
 
-		<a class="navbar-brand" href="javascript:void(0);" onClick="goHome()" href="">마우스 타자 연습</a>
+		<div class="navbar-header">
+			<a class="navbar-brand" href="javascript:void(0);" onClick="goHome()" href="">마우스 타자 연습</a>
+		</div>
 
-		</button>
-
-		<div class="collapse navbar-collapse" id="navbarsExampleDefault">
-			<ul class="navbar-nav flex-row ml-md-auto d-none d-md-flex">
-
-				<li class="nav-item mr-2">
-					<a class="btn btn-warning btn-lg px-3" href="./../client/login.html">등록 학생 로그인</a>
-				</li>
-
-				<li class="nav-item">
-					<a class="btn btn-primary btn-lg" href="./../main/login.html">마에스트로 로그인</a>
-				</li>
-
-			</ul>
+		<div class="eyebrow ml-auto mt-0 d-md-flex align-items-center">
+			<a class="btn btn-outline-warning btn-lg mr-2" href="./../client/login.html" target="_blank">등록 학생 앱 실행</a>
+			<a class="btn btn-primary btn-lg" href="./../main/login.html">마에스트로 로그인</a>
 		</div>
 
 	</div> <!-- container -->