body {
  font-family: sans-serif;
}

#btn0 {
  all: unset;
  position: absolute;
  top: 5%;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  background: rgb(0, 0, 0, 0.0);
  color: black;
  border-radius: 15px;
  padding: 10px;
  cursor: pointer;
}

#btn1 {
  all: unset;
  position: absolute;
  top: 95%;
  left: 20%;
  transform: translateX(-50%);
  z-index: 1;
  background: rgb(255, 122, 0, 1.0);
  color: white;
  border-radius: 15px;
  padding: 10px;
  cursor: pointer;
}

#btn1:active {
  background-color: rgb(220, 100,  0, 0.7);
}

#btn2 {
  all: unset;
  position: absolute;
  top: 95%;
  left: 40%;
  transform: translateX(-50%);
  z-index: 1;
  background: rgb(255, 122, 0, 1.0);
  color: white;
  border-radius: 15px;
  padding: 10px;
  cursor: pointer;
}

#btn2:active {
  background-color: rgb(220, 110, 0, 0.7);
}

#btn3 {
  all: unset;
  position: absolute;
  top: 95%;
  left: 60%;
  transform: translateX(-50%);
  z-index: 1;
  background: rgb(255, 122, 0, 1.0);
  color: white;
  border-radius: 15px;
  padding: 10px;
  cursor: pointer;
}

#btn3:active {
  background-color: rgb(220, 110, 0, 0.7);
}

#btn4 {
  all: unset;
  position: absolute;
  top: 95%;
  left: 80%;
  transform: translateX(-50%);
  z-index: 1;
  background: rgb(255, 122, 0, 1.0);
  color: white;
  border-radius: 15px;
  padding: 10px;
  cursor: pointer;
}

#btn4:active {
  background-color: rgb(220, 110, 0, 0.7);
}