body {
  font-family: "Helvetica", "verdana";
  margin: auto;
}

#canvas{
  background-color: WhiteSmoke;
  width: 80vmin;
  height: 80vmin;
  margin: 0 auto;
  position: relative;
}


#triangleup{
  width: 0;
  height: 0;
  bottom: 75%;
  top: 15%;
  right: 17%;
  
  border-left: 25vmin solid transparent;
  border-right: 25vmin solid transparent;
  border-bottom: 25vmin solid rgb( 2 29 107);
  position: absolute;
}

#triangledown {
  width: 0;
  height: 0;
  bottom: 75%;
  top: 50%;
  right: 17%;
  
  border-left: 25vmin solid transparent;
  border-right: 25vmin solid transparent;
  border-top: 25vmin solid rgb( 2 29 107);
  position: absolute;
}