:root {
    ---white-color:whitesmoke;
   
    --text-color:whitesmoke;
    --blue: dodgerblue;
    --red-color: #ff0000;
    --grey-dark-color: #cac2c2;
    --grey-light-color: #ede9e5;
    --white: whitesmoke;

    --black: rgb(14, 14, 14);
    --background-color: rgb(0, 0, 0); 
    --accent: rgb(232, 232, 30); 
    --gold: gold;
 }

/* 이  css 는 메뉴와 바디 기본틀만 관여 */

*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    }

    html{
        font-size: 1rem;
        scroll-behavior: smooth; 
        scroll-snap-type: y mandatory;
        scroll-padding-top: 70px;
     }

    
body{
    font-size: 1em;
    font-family: 'Open Sans', sans-serif;
    font-family: 'Noto Sans KR', sans-serif;

    color: inherit;
    position: relative;
    height: 111%; 
    /* 첫화면 배경높이 */
    overflow-x: hidden;
    background: var(--black);
    /* background-size: cover;
    background-position: center;
    background-repeat: no-repeat; */
    /* background-image: linear-gradient(rgba(30,30,30, 0.5), rgba(30,30,30, 0.5)),url(./images/lib-pic9.jpg); */
    -ms-overflow-style: none;
}



body::-webkit-scrollbar {
display: none; 
}
/* 스크롤바*/



/* 이  css 는 메뉴와 바디 기본틀만 관여 */


.font{
   color: yellow;
}
.font1{
    color: yellowgreen
 }
.font2{
    color:whitesmoke;
    font-size: 1.4rem;
 }
 .font3{
    display: inline-block;
    color:whitesmoke;
    font-size: 1.7rem;
 }
 .font4{
    color:gold;
    font-size: 1rem;
 }
 .font5{
    color:gold;
    font-size: 1rem;
 }
 .font6{
    color:darkgray;
    font-size: 0.9rem;
 }

header{
    position: fixed;
    top: 0px;
    height: 71px;
    width: 100%;
    border: 0px solid  yellow; 
   
    
}


li{
    list-style: none;
    font-size: 0.9rem;
    color: var(--white);
    
    
}

a{
    
    text-decoration: none;
}

/* 이  css 는 메뉴와 바디 기본틀만 관여 */
.container{
    display: block;
    position: fixed;    
    width: 100%;
    margin: 0 auto;
    border: 0px solid  yellow; 
    overflow-x: hidden;
    background: none;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)),url(./images/lib-pic9.jpg);
    z-index: 1;
       
}
.subcontainer{
    width: 80%;/* 모바일 아이프레임 꽉참 */
    margin: 0px auto;  /* top 마진 주면 바탕화면 스티키 현상 */
    border: 0px solid  sandybrown; 
}



.navbar{
    display: flex;
    position: sticky;
    top:6px;
    width: 100%;
    height: 4.2em;
    display: flex;
    justify-content: space-between;
    padding-left: 0%;
    padding-right: 0%;
    align-items: center;    /* vertical center */
    border: 0px solid red;
    background-color: var(--black);
    
}

.nav-menu{
    position: absolute;
    right: 25px;
    display: flex;
    justify-content: space-around;
    gap:5px;
    align-items: center;
    list-style: none;
    padding: 0.5% 1%;
    
    font-size: 0.8rem;
    border: 0px solid  blue;
   
 }


 .nav-menu li{
    font-size: 1.2em;
    font-weight: 600;
    padding: 10px 6px;
    border: 0px solid  blue; 
    
 }

 .nav-menu li:hover {
    color: var(--gold);
    background-color: var(--blue);
    border-radius: 4px;
    text-decoration: none;
    
 }

 
.nav-branding{    
   
    margin-left: 2%; 
    width: auto;    
    height: 2.8rem;  
    padding-top: 5px;
    /* border: 1px solid  blue; */
}


.hamburger{

    display: block;
    position: absolute;
    right: 5px;
    cursor: pointer;
    border: 0px solid  blue; 
    border-radius: 5px;
    
    
    
}

.bar{
    display: var(--white);
    width: 25px;
    height: 3px;
    margin: 5px 0;
    transition: all 0.6s ease;
   
    

   
}
.line {
    position: absolute;
     top: 3.3rem;
     text-align: center; 
     width: 90%;
     margin-left: 2%;
     color: darkgray
 }



#Home{
    margin-top: 70px;
    margin-bottom: 0px;
    border: 0px solid blue;
    height: 144vh;
    color: greenyellow;
}

/* 이  css 는 메뉴와 바디 기본틀만 관여 */

@media(max-width:800px){
    header{
        position: fixed;
        top: 0px;
        width: 100%;
        height: 4.4em;
        z-index: 111;
    }
   
    .font3{
        color: var(--white);
        font-size: 1.4rem;
     }
    .navbar{
        display: flex;
        position: sticky;
        top:0px;
        width: 100%;
        height: 67px;
        z-index: 111;
        border: 0px solid blue;  
        
    }
    .nav-branding{
        width: auto;
        display: block;
        font-size: 1.5rem;
        border: 0px solid blue;
    }
    
    
    .hamburger{
        display: block;
        padding: 3px 5px;
        margin-right: 12px;
        /* background-color:var(--black-color); */
        margin-top: 6px;
        border: 0px solid blue;
               
     }

     .bar{
        display: block;        
        background-color: var(--white);
       
               
     }
     
    

    .hamburger.active .bar:nth-child(2){
        opacity: 0;
    }
    .hamburger.active .bar:nth-child(1){
        transform: translateY(8px) rotate(45deg);
    }
    .hamburger.active .bar:nth-child(3){
        transform: translateY(-8px) rotate(-45deg);
    }

    .nav-menu{
        position: fixed;
        left: 100%;/*오른쪽으로 숨기기 위함*/
        top: 70px;/*메뉴바에 붙게*/
        gap: 0px;/*아이템 간격배치*/
        padding-left: 51px;/*아이템 좌우 간격배치*/
        border: 0px solid gold;
        align-items: start;
        flex-direction: column;
        /* background: #000; */
        background: linear-gradient(rgba(0, 0, 0, 0.8),rgba(0, 0, 0, 0.8));
        width: 100%;
        transition: all 0.7s ease-in-out; 

         
    }
    .nav-menu li{
        width: 110%;
        padding-left: 2%;
        font-size: 1rem;
        text-align: center;
        color: var(--white);
        font-weight: 700;
        border: 0px solid blue;
    }
    

    .nav-item{
        margin: 0px -42px;/* 모바일 list gap */      
    }
    .nav-menu.active{
        left: 0%;/*모바일 메뉴창 좌우이동 */
        width: 100%;
        top: 69px;/*메뉴바에 붙게*/      
        border: 0px solid red;
  
}
.nav-menu li:hover {
   
    background-color: var(--blue);
    color: var(--gold);
    border-radius: 6px;
    text-decoration: none;
    
 }

.subcontainer{
    width: 100%;/* 모바일 아이프레임 꽉참 */
    margin: 0 auto;  /* top 마진 주면 바탕화면 스티키 현상 */
    border: 0px solid  yellow; 
  
}

body{
    -ms-overflow-style: none;
    }
    
   ::-webkit-scrollbar {
     display: none;
   }
   
   /*특정 부분 스크롤바 없애기*/
   
   .box{
      -ms-overflow-style: none;
   }
   .box::-webkit-scrollbar{
     display:none;
   }

}