style.css

header{
  display: flex;
  flex-direction: row;
  align-content: center;
  align-items: center;
  justify-content: center;
  height: 150px;
}

h1{
  font-family: 'Nunito', sans-serif;
  font-size: 50px;
}

h3{
  font-family: 'Nunito', sans-serif;
  font-size: 30px;
}
p{
  font-family: 'Nunito', sans-serif;
  font-size: 15px;
}
#back{
  width: 100%;
  height: 100%;
  position: absolute;
  top: 150px;
  left: 0;
  z-index: 10;
}

#background-canvas{
  border: 1px solid black;
  width: 100%;
  height: 100%;
}

#game{
  width: 100%;
  height: 100%;
  position: absolute;
  top: 150px;
  left: 0;
  z-index: 10;
  display: flex;
  flex-direction: row;
  justify-content: space-evenly;
  align-items: center;
  align-content: center;
}

#left-panel{
  width: 33%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  align-content: center;
}

#main-game{
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  align-content: center;
}

#right-panel{
  width: 33%;
  display: flex;
  flex-wrap: wrap;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  align-content: center;
}


#main {

  border: 1px solid black;
}

button {

  font-family: 'Nunito', sans-serif;

  height: 50px;
  width: 200px;
  background-image: linear-gradient( 135deg, #EE9AE5 10%, #5961F9 100%);
  color: white;
  margin-top:20px;
  margin-bottom:20px;
  margin-left:20px;
  margin-right: 20px;
  border: 2px;
  text-align: center;
  font-size: 25px;
}