/* 노멀라이즈 시작 */
html, body, ul, li {
    margin: 0;
    padding: 0;
    list-style: none;
}

a {
    color: inherit;
    text-decoration: none;
}
/* 노멀라이즈 끝 */

/* 2차 이상의 메뉴만 none 값을 주기 */
.menu > ul ul {
    display: none;
}

/* 가운데 정렬 */
.top {
    margin-left: auto;
    margin-right: auto;

}

/* 변수 생성 */
:root {
    --site-width: 1200px;
}

/* 사이트 최소 너비 설정 */
.con-min-width {
    min-width: var(--site-width);
}

/* 실질적으로 메뉴에 사용할 너비 설정 */
.menu > ul > li {
    display: inline-block;
}

/* 문자열 가운데 정렬 */
.menu {
    text-align: center;
    margin-top: 30px;
    margin-bottom: 30px;
    
    display: flex;

    z-index: 2;
}

/* 모든 메뉴 크기 조절 */
.menu ul > li > a {
    display: block;
    padding-left: 100px;
    padding-right: 100px;
    padding-top: 30px;
    padding-bottom: 30px;
}

/* 모든 메뉴를 마우스 인식 시 배경색 변경 */
.menu ul > li:hover > a {
    font-family: "Noto Sans" , sans-serif;
    font-weight: 800;
    color: black;
    background-color: rgb(235, 235, 235);
    transition: 0.3s;
}

/* 2차 메뉴 등장 */
.menu > ul > li:hover > ul {
    display: block;
    transition: 0.3s;
}

/* 1차 메뉴를 제한 구역으로 설정 */
.menu > ul > li {
    position: relative;
}

/* 2차 메뉴에 absolute 값 주기 */
.menu > ul > li > ul {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
}

/* 1차 메뉴 스타일 */
.main-menu {
    font-family: "Noto Sans" , sans-serif;
    font-weight: 700;
    font-size: 25px;
    color: rgb(75, 75, 75);

    transition: 0.3s;
}

/* 2차 메뉴 스타일 */
.sub-menu {
    font-family: "Noto Sans" , sans-serif;
    font-weight: 500;
    font-size: 17px;
    color: rgb(80, 80, 80);
    background-color: white;

    display: block;
    width: 100px;

    z-index: 2;
}

/* 언어 목록 스타일 */
.lang {
    padding: 10px 3px;
    color: gray;

    transition: 0.3s;
}

.lang:hover {
    color: black;
    transition: 0.3s;
}

.lang-w {
    margin-top: 35px;
    margin-left: 150px;
}

/* 로고 크기 조절 */
.menu > a {
    width: 500px;
    height: 93px;
}

.main-logo {
    width: 20%;
    margin-left: 200px;
    margin-right: 100px;

}

/* 회사 사진 */
.slider {
    margin: auto;
    position: relative;
    overflow: hidden;

    background-color: gainsboro;

    width: 100%;
    height: 600px;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;

    animation: slider 12s infinite linear;
}

.slide:nth-child(1) {
    background-image: url(img/company/company_b.jpg);
    animation-delay: 0;
}

.slide:nth-child(2) {
    background-image: url(img/company/서울지사.jpg);
    animation-delay: -4s;
}

.slide:nth-child(3) {
    background-image: url(img/company/창고1.jpg);
    animation-delay: -8s;
}

@keyframes slider {
    0% {
        transform: translateX(0);
    }

    26% {
        transform: translateX(0);
    }

    33% {
        transform: translateX(-100%);
        animation-timing-function: step-end;
    }

    93% {
        transform: translateX(100%);
    }

    100% {
        transform: translateX(0);
    }
}

.slide-bg {
    background-color: gainsboro;
    display: inline-block;
    width: 1000px;
    height: 600px;
}

/* 서론 */
.start {
    margin: 50px 460px;
    padding: 30px 30px;
    font-family: "Noto Sans" , sans-serif;
}

.line {
    margin-left: 10px;
    margin-bottom: 30px;
    width: 2px;
    height: 80px;
    background-color: rgb(53, 53, 53);
}

.blue {
    font-size: 70px;
    color: rgb(30, 103, 187);
}

/* 기본현황 */
.basic {
    display: flex;
    margin-top: 0px;
    margin-bottom: 100px;
    margin-left: 460px;
    margin-right: 460px;
    padding: 30px 30px;
}

.basic-title {
    font-family: "Noto Sans" , sans-serif;
    font-weight: 700;
    font-size: 20px;
}

.basic-text {
    font-family: "Noto Sans" , sans-serif;
    font-weight: 350;
    padding-top: 3.5px;
    padding-left: 40px;
    line-height: 31.4px;
}

/* 구분선 */
.line2 {
    margin: auto;
    width: 1800px;
    height: 1px;
    background-color: rgb(219, 219, 219);
}

.air {
    padding: 30px 40px;
}

/* 회사 연혁 */
.history-title {
    margin-top: 160px;
    margin-left: 485px;

    font-family: "Noto Sans" , sans-serif;
    font-weight: 800;
    font-size: 38px;
    color: rgb(30, 103, 187);
}

.history {
    text-align: center;
    margin-top: 50px;
    margin-bottom: 100px;
}

/* 인증서 및 등록증 */
.cer1 {
    width: 1000px;
    margin: 20px auto;
    overflow: hidden;
}

.cer2 {
    width: 1000px;
    margin: 50px auto;
    overflow: hidden;
}

.cer3 {
    width: 1000px;
    margin: 70px auto;
    overflow: hidden;
}

.cer1 > a > img {
    width: 16%;
    margin: 0 40px;
    border: 1px solid black;

    z-index: 1;
}

.cer2 > a > img {
    width: 16%;
    margin: 0 40px;
    border: 1px solid black;
}

.cer3 > a > img {
    width: 16%;
    margin: 0 40px;
    border: 1px solid black;
}

.cer1 > a > img:hover {
    filter: brightness(0.5);
    transition: 0.3s;
}

.cer1 > a > img:not(:hover) {
    filter: brightness(1);
    transition: 0.3s;
}

.cer2 > a > img:hover {
    filter: brightness(0.5);
    transition: 0.3s;
}

.cer2 > a > img:not(:hover) {
    filter: brightness(1);
    transition: 0.3s;
}

.cer3 > a > img:hover {
    filter: brightness(0.5);
    transition: 0.3s;
}

.cer3 > a > img:not(:hover) {
    filter: brightness(1);
    transition: 0.3s;
}


/* 인증&등록 텍스트 */
.cer-text1-1 {
    display: inline;
    margin: 0px 60.3px;
}

.cer-text1-2 {
    display: inline;
    margin: 0px 49px;
}

.cer-text1-2-1 {
    display: inline;
    margin-left: 286px;
}

.cer-text1-3 {
    display: inline;
    margin: 0px 47.2px;
}

.cer-text1-3-1 {
    display: inline;
    margin-left: 80px;
}

.cer-text1-4 {
    display: inline;
    margin: 0px 47.8px;
}

.cer-text1-4-1 {
    display: inline;
    margin-left: 87px;
}


.cer-text2-1 {
    display: inline;
    margin: 0px 57.6px;
}

.cer-text2-2 {
    display: inline;
    margin: 0px 59px;
}

.cer-text2-3 {
    display: inline;
    margin: 0px 44.5px;
}

.cer-text2-4 {
    display: inline;
    margin: 0px 79px;
}



.cer-text2-1-1 {
    display: inline;
    margin-left: 57px;
}

.cer-text2-2-1 {
    display: inline;
    margin-left: 111px;
}

.cer-text2-3-1 {
    display: inline;
    margin-left: 102px;
}

.cer-text2-4-1 {
    display: inline;
    margin-left: 83.5px;
}



.cer-text2-1-2 {
    display: inline;
    margin-left: 25px;
}

.cer-text2-3-2 {
    display: inline;
    margin-left: 316px;
}



.cer-text3-1 {
    display: inline;
    margin: 0px 50.5px;
}

.cer-text3-2 {
    display: inline;
    margin: 0px 39.5px;
}

.cer-text3-3 {
    display: inline;
    margin: 0px 49.3px;
}

.cer-text3-4 {
    display: inline;
    margin: 0px 49px;
}

.cer-text3-4-1 {
    display: inline;
    margin-left: 799px;
}

/* 최하단 */
.bottom {
    display: flex;
    padding: 30px;

    background-color: rgb(212, 212, 212);
}

/* 로고 */
.bottom-logo {
    margin-left: 200px;
    margin-top: 11px;

    width: 6%;
    height: 4.5%;
}

/* 하단 정보 */
.bottom-text {
    padding: 20px 100px;

    font-family: "NanumSquareBold" , sans-serif;
    font-size: 14px;
    color: rgb(75, 75, 75);
    line-height: 20px;
}

.bottom-text2 {
    margin-left: 560px;
    margin-top: 63px;

    font-family: "NanumSquare" , sans-serif;
    font-size: 14px;
    color: rgb(151, 151, 151);
}