.forground{
    height: 100%;
    width: 100%;
    z-index: 10000;
    background-color: #243342;
}
.forground img{
    
    cursor: pointer;
    width: 100%;
    position: absolute;
    top: 50%;
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
}



.dropdown-menu{
    margin: 0 auto;
    position: relative;
}

.nav{
    height: 60px;
    position: absolute;
    top: 10px;
    left: 10px;
}

.nav ul{
    margin-top: 3px;
    padding: 0;
    
}

.nav ul li{
    background: #2c3e50;
    border-radius: 2px;
    width: 230px;
    position: relative;
    list-style: none;
    display: block;
    margin-bottom: 2px;
    
}

.nav ul li a{
    display: block;
    padding: 0 15px;
    color: white;
    text-decoration: none;
    line-height: 30px;
    font-size: 15px;
    position: relative;
}

.nav ul li a i{
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);

}

.nav ul li a:hover{
    background: #243342;
    border-radius: 5px;
}

.nav ul ul{
    position: relative;
    top: 0;
    display: none;


    overflow-x: hidden;
    overflow-y: auto;
    
}

.nav ul ul::-webkit-scrollbar {
    width: 5px;
  }
  
  /* Track */
  .nav ul ul::-webkit-scrollbar-track {
    background: #4c5e70; 
  }
   
  /* Handle */
  .nav ul ul::-webkit-scrollbar-thumb {
    background: #243342; 
    border-radius: 5px;
  }
  
  /* Handle on hover */
  .nav ul ul::-webkit-scrollbar-thumb:hover {
    background: #555; 
  }

.nav ul li:hover > ul {
    display: block;
}

.nav ul ul li{
    margin-bottom: 1px;
    width: 230px;
    float: none;
    display: list-item;
    background: #4c5e70c5;
}

.menu-btn {
    width: 30px;
    background: #2c3e50;
    margin-bottom: 15px;
    border-radius: 3px;
    position: relative;
    padding: 0;
    margin: 0;
    display: none;
}
.menu-btn i{
    font-size: 20px;
    padding: 5px 7px;
}

#close-btn{
    position: absolute;
    top: 0;
    left: 200px;
}

.logo{
    z-index: 20;
    position: fixed;
    top: 5px;
    right: 5px;
}
.logo img{
    width: 300px;
}



@media (max-width: 600px) {
    .menu-btn{
        display: block;
    }
    #close-btn{
        display: none;
    }
    .nav {
        z-index: 10;
    }
    
    .nav ul{
        display: none;
        overflow-x: hidden;
        overflow-y: auto;
    }
    .nav ul li{
        display: block;
        margin-bottom: 1px;
    }

    .nav ul ul{
        position: relative;
        top: 0;
    }

    .nav ul ul li{
        border-bottom: 1px solid #2c3e50 ;
        margin-bottom: 1px;;
        display: list-item;
    }
    .nav ul li:hover > ul {
        display: block;
    }

    .logo img{
        width: 150px;
    }
}