html {
     background-color: black;
}

body {
     color:gray;
}

#app {
     flex-direction: column;
     margin: 0 auto;
}
   
.filters select {
     display:initial;
   }
   
   #chart-container {
     position: relative;
     margin: 0 auto;
   }

   .chart-wrapper {
     position: relative;
   }
   

.chart-wrapper canvas {
     display:initial;
}

.chart-navigation {
     position: relative;
     display: flex;
     justify-content: space-between;
     margin-top: 10px;
   }
   
   .chart-navigation button {
     padding: 5px 10px;
     top:0;
     bottom:0;
     height: 25px;
     margin-top: -185px; 
   }

   #previous {
     position: absolute;
     left: 0;
     margin-left: 40px;
   }
   
   #next {
     position: absolute;
     right: 0;
     margin-right: 90px;
   }

 #chart {
     width:800px;
     max-width: 90%;
     height:580px;
     max-height: 580px;
     margin: 0 auto;
     position:relative;
 }