html {
    background-color: #2E2E2E;
}
* {
    box-sizing: border-box;
  }
body {
    background-color: #2E2E2E;
    color: #e5e5e5;
    font-family: 'Montserrat', sans-serif;
    line-height: 1.7;
    margin: 0;
    padding: 0;
}

#topHeader {
    background-color: #cc3333;
    overflow: hidden;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 65px;
    position: relative;
}

#topHeader img {
    width: 200px;
    height: 70px;
}
/* -------------------------- menu button ------------------------------ */
.menu {
    display: inline-block;
    cursor: pointer;
    position: absolute;
    left: 15px;
    display: none;
}
  
  .bar1, .bar2, .bar3 {
    width: 20px;
    height: 3px;
    background-color: white;
    margin: 6px 0;
    transition: 0.4s;
  }
  
  .change .bar1 {
    -webkit-transform: rotate(-45deg) translate(-6px, 4px);
    transform: rotate(-45deg) translate(-3px, 4px);
  }
  
  .change .bar2 {opacity: 0;}
  
  .change .bar3 {
    -webkit-transform: rotate(45deg) translate(-8px, -8px);
    transform: rotate(45deg) translate(-8px, -9px);
  }

/* --------------------------------- Side Navbar --------------------------------- */
#accordionExample {
    padding-top: 10px;
}
#sidebar {
    position: fixed;
    width: 360px;
    background-color: #2E2E2E;
    font-size: 21px;
    overflow-y: scroll;
    top: 65px;
    bottom: 0;
    transition: 0.5s;
}

#sidebar .topnav {
    background-color: #cc3333;
    overflow: hidden;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 65px;
}

#sidebar .topnav img {
    width: 200px;
    height: 70px;
}

#sidebar .dash {
    height: 150px;
    background-color: #1D1D1D;
    color: #F2F3F5;
    padding:10px 5px 10px 15px;
}


#sidebar .card {
    border-radius: 0px;
    background-color: #2E2E2E;
}

#sidebar button {
    padding: 10px 5px 10px 15px;
    background-color: #2E2E2E;
    border-radius: 0px;
    color: #E5E5E5;
    border-bottom: 1px solid #e5e5e5;
}





#sidebar li {
    background-color: #2E2E2E;
    color: #e5e5e5;
    
}

#sidebar li a {
    color: #e5e5e5;
    font-size: 18px;
    display: flex;
    justify-content: flex-start;
    flex-direction: row;
}

#sidebar li span {
    font-size: 14px;
    font-style: italic;
}

#sidebar li .active {
    text-decoration: underline;
    color: #cc3333;
}



/*? ------------------------- main -------------------- */

.main {
    margin-left: 360px;
    background-color: #1d1d1d;
    color: white;
    height: calc(100vh - 65px);
    position: relative;
}

.des {
    border-bottom: 1px solid #e5e5e5;
    padding: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 65px;
    font-size: 16px;
    font-weight: 500;
}

.content {             
    display: flex;
    justify-content: center;
    align-items: center;
    height: calc(100% - 100px);

}

.mark-unmark {
    border-top: 1px solid whitesmoke; 
    width: 100%;
    height: 35px; 
    display: flex;
    justify-content: center;
    align-items: center;
    position: absolute;
    bottom: 0px;
    cursor: pointer;
    z-index: 1000;
}




/* .content iframe {
    border: 1px solid red;
    
}  */

.content iframe.video {
    width: 75%;
    aspect-ratio: 16/9;
    margin-left: 10%;
    margin-right: 10%;
}

.content iframe.text {
    width: 100%;
    height: 100%;
}


@media only screen and (max-width: 760px) {
    #sidebar {
      width: 100%;
      z-index: 1;
    }

    .main {
        width: 100%;
        display: none;
        margin-left: 0px;
       
    }
    .menu {
        display: block;
    }

    .content iframe.video {
        width: 100%;
        aspect-ratio: 16/9;
        margin-left: 0%;
        margin-right: 0%;
    }

    #topHeader img {
        width: 150px;
        height: 50px;
    }

    .bar1, .bar2, .bar3 {
        height: 2px;
    }
  }






/* ----------------------tick-----------------------
.tick {
	border:2px solid red;
	border-radius:50%;
    font-size:20px;
    height:23px;
    width:23px;
    position:relative;
    margin-right: 10px;
}

.full {
background-color:red;
}

.tick::before {
    content: '';
    position:absolute;
    left:3px;
    bottom:-6px;
    color:black;
    font-weight: 800;
  }

.tick.b::before {
  content: '✓';
  position:absolute;
  left:3px;
  bottom:-6px;
  color:black;
  font-weight: 800;
} */