body {
   margin: 0;
   padding: 0;
   box-sizing: border-box;
   color: rgb(29, 29, 29);    
   background-color: #111;
}

#container{
    width: calc(100% - 4px);
    display: flex;
    flex-direction: row;
    margin-left: 2px;
    margin-right: 2px;
}

#menu{
    width: 200px;
    position: fixed;
    left: 4px;  
    color: #eee;  
    background-color: #333;
}

nav{
    width: 100%;
    height: 40px;
    background-color: #333;    
    display: none;
    position:fixed;
    top:0 
    
}

#app_bar_title{
    margin-left: 4px;
    font-family:'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;  
    margin-left: 8px;
    font-weight: bold;
    color: #eee;  
}

#menu_icon{
    width: 28px;
    height: 28px;   
    background-image: url("./images/icons/menu_icon_white.svg");
    background-size: contain;
    margin-right: 6px;
}

#menu_icon:hover{
    cursor: pointer;
}

#drop_list{
    position: absolute;
    top: 40px;
    right: 0px;
    z-index: 1;
    background-color: white;
    border: 1px solid rgb(160, 160, 160);
    font-family: 'Courier New', Courier, monospace;
    display: none;  
}

.drop_list_item{
    font-size: 26px;
    padding: 8px 8px;
    border-bottom: 1px solid rgb(160, 160, 160);
}

.drop_list_item:hover{
    cursor: pointer;
    background-color: rgb(160, 160, 160);
}


#content{ 
    margin-left: 200px;
    width: calc(100% - 200px); 
    padding-left: 4px;
    border-top: 1px solid #666;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.content-item{
   
}

.title{
    color: #eee;   
    font-family: 'Courier New', Courier, monospace;
    padding: 8px 4px;
    background-color: #555;
}

.image{
    width: 100%;    
}

.video{
    width: calc(100% - 4px); 
    height: 56.25vw;
}

.menu_item{
   font-size: 24px;
   font-family: 'Courier New', Courier, monospace;
   padding: 8px 4px;
   border-bottom: 1px solid #666;
   border-left: 1px solid #666;
}

.menu_item:hover{
    cursor: pointer;
}

.selected{
    background-color: #555;
}


@media only screen and (max-width: 600px) {
    .title{
        font-size: 18px;
    }
    #app_bar_title{
        font-size: 24px;
    }
}

@media only screen and (min-width: 600px) {
    .title{
        font-size: 22px;
    }
    #app_bar_title{
        font-size: 28px;
    }
}

@media only screen and (min-width: 768px) {
    .title{
        font-size: 26px;
    }
}


@media only screen and (min-width: 992px) {
    .title{
        font-size: 30px;
    }
}

@media only screen and (max-width: 768px) {
    nav{        
        display: flex;
        flex-direction: row;
        justify-content:space-between;
        align-items: center;     
              
    }
    #menu{
        display: none;
    }

    #content{     
        width: 100%;
        margin-top: 40px;
        margin-left: 0;   
    }
}