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

}
a{
    text-decoration: none;
}
ul,li,ol{
    list-style: none;
}
body{
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    height: 100vh;
}

header{
    height: 150px;
    width: 100%;
    background: url(../images/ist3.jpeg);
    background-size: 100% 150px ;
    background-repeat: no-repeat;
    z-index: 1;
    position: fixed;
}
header img{
    width: 150px;
}
.navbar{
    margin-top: 20px;
    float: right;
    display: block;
    height: 100px;
    

}

.navbar-menu li{
   
    display: inline-block;
    border-right: 1px solid #000;
    padding: 20px;
    margin-top: 30px;
    transition: 300ms all;
   
   
}
.navbar-menu li:first-child{
    border-left:1px solid #000;
}
.navbar-menu li:last-child{
    border-right: none;
    margin-right: 10px;
}
.navbar-menu li a{
color: #FFF;
font-size: 18px;
font-weight: 700;
   
}
.navbar-li-committess ol li{
    margin-top: -20px;
}
.navbar-li-general ol li{
    margin-top: -20px;
}
.navbar-li-key-dates ol li{
    margin-top: -20px;
}
.navbar-li-co-located ol li{
    margin-top: -20px;
}
.navbar-li-previous-edution ul li{
    margin-top: -30px;
    border: none;
}
.navbar-menu-general,
.navbar-menu-committes,
.navbar-menu-key-dates,
.navbar-menu-co-located,
.navbar-menu-previous-edution{
    position: absolute;
    display:none;
    color: white;
    background-color: rgba(0, 0, 0, 0.6);
    border: none;


}
.navbar-menu-general {
    right: 1px;
    margin-top: 18px;
    
}
.navbar-menu-committes {
    left: 0.3px;
    margin-top: 18px;
}
.navbar-menu-key-dates{
    margin-top: 18px;
    left: 0px;
}
.navbar-menu-co-located{
    margin-top: 18px;
    right: 20px;
}
.navbar-menu-previous-edution{
    width: 200px;
    border: none;
    padding-top:10px ;
}




.navbar-menu-general li a {
    font-size:14px;
}
.navbar-menu-committes li a {
    font-size:14px;
}
.navbar-menu-key-dates li a {
    font-size:14px;
}
.navbar-menu-co-located li a {
    font-size:14px;
}
.navbar-menu-previous-edution li a {
    font-size:12px;
}




.navbar-menu-committes {
    left: 0.3px;
    margin-top: 18px;
}
.navbar-menu-key-dates{
    margin-top: 18px;
    left: 0px;
}
.navbar-menu-co-located{
    margin-top: 18px;
    right: 20px;
}
.navbar-menu-previous-edution {
    left: 0.3px;
    margin-top: 18px;
}
.navbar-li-general:hover .navbar-menu-general{
    display: block;
}
.navbar-li-committess:hover .navbar-menu-committes{
    display: block;
    
}
.navbar-li-key-dates:hover .navbar-menu-key-dates{
    display: block;
}
.navbar-li-co-located:hover .navbar-menu-co-located{
    display: block;
}
.navbar-li-previous-edution:hover .navbar-menu-previous-edution{
    display: block;
}
[class^="navbar-li-"]:hover{
    transform: scale(1.2);
    background-color: rgba(0, 0, 0, 0.6);

}

.little-menu{
    margin-top: -13px;
    width: 100%;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.89);
    font-size: 20px;
    color:#FFF;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: 300ms all;
    display: none;
    
}
.little-menu-list li {
    margin-top: 10px;
    
    text-align: center;
    
    
}

.little-menu-list-general-li,
.little-menu-list-committess-li,
.little-menu-list-key-dates-li,
.little-menu-list-co-located-li,
.little-menu-list-general-li-previous-edutions{
    display: none;

}
[class^="little-menu-list-"]:hover{
    background-color: rgba(255, 255, 255, 0.6);

}

.little-menu-list-general:hover .little-menu-list-general-li{

    display: block;
}
.little-menu-list-committess:hover .little-menu-list-committess-li{
   
    display: block;
}
.little-menu-list-key-dates:hover .little-menu-list-key-dates-li{
    display: block;
}
.little-menu-list-co-located:hover .little-menu-list-co-located-li{
    display: block;
}
.little-menu-list-general-li-2:hover .little-menu-list-general-li-previous-edutions{
    display: block;
}
.navbar-button{
    background: none;
     float:right;
      font-size:30px;
       margin-right: 30px;
        margin-top:30px;
         color: #FFF;
         display: none;
}
.navbar-button:active{
    transform: rotate(90deg);
    transition: 400ms all;
}
.little-menu.active{
    display:block;
    }


.footer{
    display: inline-block;
    background-color: rgb(107, 107, 107);
    width: 100%;
    height: 200px;
    text-align: center;
    
}
.footer-all-icons{
    margin-top: 10px;
    margin-bottom: 20px;

}
.footer-all-icons div{
    display: inline;
}
.footer-all-icons div a{
    background-color: #FFF;
    color: #000;
    border-radius: 50%;
    font-size: 40px;
    display: inline-flex;
    width: 80px;
    height: 80px;
    flex-wrap: nowrap;
    margin-right:30px ;
    justify-content: center;
    align-items: center;
    transition: 425ms all;
}
.footer-icon-twitter:hover a {
    transform: scale(1.3);
    background-color: #1DA1F2;
    color: #FFF;
    

}
.footer-icon-facebook:hover a {
    transform: scale(1.3);
    background-color: #3b5998;
    color:#FFF;
}
.footer-copyright{
    width: 100%;
    background-color: #F53;
}
.footer-all-copyright{
    text-align: center;
    display: flex;
    justify-content: center;
    font-size: 11px;
}
.section{
    width: 100%;
    height: auto;
    background-color: white;
    font-size: 24px;
    text-align: center;
}
.section-img{
    height: 150px;
    width: 100%;
    opacity: 0.9;
    background: url(../images/ist3.jpeg);
    background-size: 100% 150px ;
    background-repeat: no-repeat;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 0;
    
}
.section-img h2{
 
   color: rgba(255, 255, 255, 0.796);

}
.section-warning{
 
    color: #F00;
    font-size: 12px;
}
.section-text{
    margin: 20px auto 0 auto;
    font-size: 14px ;
    width: 60%;
}
.section-text table{
    margin-top: 50px ;
    align-items: center;
    justify-content: center ;

}

@media (max-width:1778px)
{
    .navbar-menu li a {
        font-size: 14px;
    }
    .navbar-menu-general {
        left: 1px;
        margin-top: 18px;
        
    }
    .navbar-menu-previous-edution li  {
        font-size:10px;
    }
    .navbar-li-committess ol li{
        margin-top: -30px;
    }
    .navbar-li-general ol li{
        margin-top: -30px;
    }
    .navbar-li-key-dates ol li{
        margin-top: -30px;
    }
    .navbar-li-co-located ol li{
        margin-top: -30px;
    }
    .navbar-li-previous-edution ul li{
        margin-top: -35px;
        border: none;
    }
    .navbar-menu-general li a {
        font-size:12px;
    }
    .navbar-menu-committes li a {
        font-size:12px;
    }
    .navbar-menu-key-dates li a {
        font-size:12px;
    }
    .navbar-menu-co-located li a {
        font-size:12px;
    }
}


@media (max-width:1600px)
    {
        .navbar-button{
            display: block;
        }


        .navbar-menu{
            display: none;
        }
        
    
    }
    

    @media (max-width:600px)
    {

        .footer-all-icons div a {
            width: 50px;
            height: 50px;
            font-size: 30px;

        }
        .section-text table{
            font-size: 14px;
        }
        .section-img h2{
            font-size:24px ;
        }
    }

   
    @media (max-width:500px)
    {
        
        .footer-all-icons div a {
            width: 30px;
            height: 30px;
            font-size: 10px;

        }

        
    }