* {
  margin: 0;
  box-sizing: border-box;
}

body {
  font-family: Tahoma, Verdana, sans-serif;
}

img {
  /*width: 100%;
  height: auto;*/
}

.header {
  padding-left: 30px;
  padding-right: 30px;
}

.hero-image {
  width: 100%;
  max-width: 1500px;
  height: auto;
}

.container {
  display: grid;
  /*grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));*/
  grid-template-columns: 1fr 1fr 1fr; /* Three equal columns */
  gap: 10px;
  padding: 30px;
}

.gridheader, .gridfooter {
  grid-column: 1 / -1; /* Stretch across all columns */
  /*grid-column: span 3; /* Make header/footer stretch across all columns */
  text-align: center;
}

.box {
  /*grid-row: 2;*/
  text-align: left;
  padding: 20px;
  border-radius: 10px;
}

.box1 {
  /*grid-row: 3;*/
  text-align: left;
  padding: 20px;
  border-radius: 10px;
}

.footer {
  text-align: center;
}

#myCanvas {
  display: block;
  width: 100vw;       /* Viewport width: full screen */
  height: auto;       /* Maintain aspect ratio */
  max-width: 100%;
  margin: 0 auto;
  border:1px solid #d3d3d3;
}

 @media (max-width: 1080px) {
      
      .container {
          display: grid;
          grid-template-columns: 1fr;
      }

      .gridheader, .gridfooter {

      }  
  }