실전사이트 따라하고있는데 copyright부분 css에서 padd... - 인프런

<!DOCTYPE html>
<html lang="ko">
<head>
    <meta charset="UTF-8">
    <title>a실전연습</title>
    <link rel="stylesheet" href="css/실전a.css">
</head>
<div class="container">
    <header>
        <div class="heder-logo">
            <a href="none"><img src="images/header-logo.PNG" alt="header logo"></a>
        </div>
        <div class="navi"></div>
    </header>
    <div class="slide">
        <div></div>
    </div>
    <div class="items">
        <div class="news"></div>
        <div class="banner">
            <a href="#none">
                <img src="images/banner-1.jpg" alt="banner1">
            </a>
        </div>
        <div class="shortcut">
            <a href="#none"><img src="images/banner-2.jpg" alt="banner2"></a>
        </div>
    </div>
    <footer>
        <div class="footer-logo">
            <a href="#none"><img src="images/footer-logo.png" alt="footerlogo"></a>
        </div>
        <div class="copyright">
            상호 : 엣지컴퍼니 | 대표자 : 홍길동 | 개인정보관리책임자 : 장길산 차장<br>
            사업장주소 : 서울특별시 강남구 테헤란로 123-56
        </div>
        <div class="sns">
            <a href="#none"><img src="images/SNS.png" alt=""></a>
        </div>
    </footer>
</div>
<body>
    <script src="js/jquery-1.12.4.js"></script>
    <script src="js/custom.js"></script>
</body>
</html>

@charset "UTF-8";

body{
    margin: 0;
    font-size: 15px;
    background-color: #fff;
    color: #222328;
}
a{
    color: #222328;
    text-decoration: none;
}
.container{
     width: 1200px;
     border: 1px solid #000;
     margin: auto;
}
header{
    display: flex;
    justify-content: space-between;
}
header > div{
    height: 100px;
    border: 1px solid #000;
  
}
.heder-logo{
    width: 200px;
}
.navi{
    width: 600px;
}

.slide{}
.slide > div{
    height: 300px;
    border: 1px solid #000;

}
.items{
    display: flex;
}
.items > div{
    height: 200px;
    border: 1px solid #000;

}
.news{
    width: 500px;
}
.banner{
    width: 350px;
}
.shortcut{
    width: 350px;
}

footer{
    display: flex;
}
footer > div{
    height: 100px;
    border: 1px solid #000;
}
.footer-logo{
    width: 200px;
}
.copyright{
    width: 800px;
}
.sns{
    width: 200px;
}
/*Image & Text */
.heder-logo,.footer-logo{
   line-height: 130px;
}
.copyright{
    text-align: center;
    margin-top: 30px;
    line-height: 20px;
}

문의.jpg

인프런 커뮤니티 질문&답변

실전사이트 따라하고있는데 copyright부분 css에서 padding주면 사진첨부한거처럼 전체로 내려가는데 뭐가 문제일까요 ,,,??