body{
    background-color:#fff;
    margin:0px;
    color:#000;
    font:arial;
    min-width: 320px;
}

#main_container{
    background-color:#fff;
    margin:0 auto;
    margin-top:00px;
    padding:20px;
    max-width:900px;
    box-sizing:border-box;
    border:0px solid black;
 
}

#content{
    display:flex;
    flex-wrap:wrap;
}

div.content_box{
    border:1px solid #888;
    flex:1;
    box-sizing:border-box;
    border-radius:5px;
    padding:5px;
    margin:5px;
    flex-basis:400px;
    font-size: 16px;
    margin-top:20px;
    padding:5px;
    overflow:hidden;
}

#session_notice{
    border:1px solid #888;
    flex:1;
    box-sizing:border-box;
    border-radius:5px;
    padding:5px;
    margin:5px;
    flex-basis:400px;
    font-size: 16px;
    margin-top:20px;
    padding:5px;
    overflow:hidden;
  
}

header{
    color:navy; //darkslategrey;
    font-weight:bold;
   // text-decoration:underline;
    font-size:12px;
    margin-bottom:5px;
}
li{
margin-bottom:5px
}

#footer{
    margin-top:20px;
}

@media screen and (max-width: 800px) {
 
  #content{
      flex-direction:column
  }
 div.content_box, #session_notice{
      font-size: 3vw;
  }
  header{
      font-size: 3.5vw;
  }

}

button{
cursor:pointer
}

.dot, .dot_on {
  cursor: pointer;
  height: 10px;
  width: 10px;
  transition: background-color 0.6s ease;
  margin: 0 2px;
  margin-top:0px;
  background-color: #bbb;
  border-radius: 50%;
  display: inline-block;
}

.dot:hover {
  background-color: #717171;
}

.dot_on {
  background-color: #2E74B5;
}

.pause {
    cursor: pointer;
    text-align:center;
  height:20px;
  width:20px;
  line-height:18px;
  box-sizing:border-box;
  padding:0px;
  
  margin: 0px;
  margin-right:10px;
  border:1px solid #222;
  background-color:#ddd;
  display: inline-block;
}

.pause:hover{
    background-color:#9cf;
    cursor:pointer
}