.headerone {
  text-align: center;
  color: #3a81cd;
  font-family: 'Roboto', sans-serif;
  margin: 1rem auto 0.3rem auto; 
  padding: 1rem 2rem;
  width: 50%;
  background-color: #e8f0fe;
  border-radius: 12px;
  border: solid 1px #e8f0fe;
}

.headertwo {
  text-align: center;
  color: #3a81cd;
  font-family: 'Roboto', sans-serif;
  margin: 0.5rem auto 0.5rem auto; 
  padding: 1rem 2rem;
  width: 50%;
  background-color: #e8f0fe;
  border-radius: 12px;
  border: solid 1px #e8f0fe;
}

/* e8f0fe */
.chart-container {
  width: 90%;
  max-width: 500px;
  aspect-ratio: 1 / 1;
  position: relative;
}

.chart {
  width: 100% !important;
  height: 100% !important;
}



.container{
  text-align: center;
  font-family: 'Roboto', sans-serif;
  display: grid;
  grid-template-rows: auto 1fr; 
  justify-items: center;        
  align-items: start;
  color: #3a81cd;
}

/* offline melding */
#offlineBanner {
  font-size: large;
  font-family: 'Roboto', sans-serif;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: #ff6b6b;
  color: black;
  text-align: center;
  padding: 10px;
  z-index: 1000;  
  box-shadow: 0px 2px 5px rgba(0, 0, 0, 0.2);
  display: none;
}


/* menu */
body {margin: 0;}

.sidenav-logo {
    width: 100%;
    height: auto;
    display: block;
    top: 0;
}
  
ul.sidenav {
  list-style-type: none;
  margin: 0;
  top: 0;
  padding: 0;
  width: 10%;
  background-color: #f1f1f1;
  position: fixed;
  height: 100%;
  overflow: auto;
}

ul.sidenav li a {
  display: block;
  color: #000;
  padding: 8px 16px;
  text-decoration: none;
  font-size: large;
  font-family: 'Roboto', sans-serif;
}

ul.sidenav li a.active {
  background-color: #3a81cd;
  color: white;
}

ul.sidenav li a:hover {
  background-color: #3a81cd;
  color: white;
}


div.content {
  margin-left: 25%;
  padding: 1px 16px;
  height: 1000px;
}

@media screen and (max-width: 1135px) {
  .headerone {
    width: 80%;
  }

  .headertwo {
    width: 80%;
  }

  ul.sidenav {
    width: 100%;
    height: auto;
    position: relative;
  }
  
  ul.sidenav li a {
    float: left;
    padding: 15px;
  }

  .sidenav-logo {
    display: none;
  }
  
  div.content {margin-left: 0;}
}

@media screen and (max-width: 530px) {

  .headerone {
    width: 80%;
  }

  .headertwo {
    width: 80%;
  }

  ul.sidenav li a {
    text-align: center;
    float: none;
  }

  .sidenav-logo {
    display: none;
  }
}