body {
  font-family: Helvetica, Arial, sans-serif;
  background-color: #f4f4f4;
  margin: 0;
  padding: 20px;
  text-align: center;
  background-color: #684aff;

  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  display: flex;
  justify-content: center;
  max-width: 700px;
  margin: auto;
  border: 2px solid #3d3d3d;
  border-radius: 10px;
  padding: 30px;

  background-color: #9883ff;
}

.left {
  border-right: 1px solid #3d3d3d;
  padding-right: 20px;
}
.right {
  padding-left: 20px;
}

h1 {
  color: #333;
}

#counter {
  font-weight: bold;
  font-size: 5em;
  color: #333;
  margin: 20px 0;
}

.buttons {
  display: flex;
  justify-content: center;
  flex-direction: column;
  gap: 10px;
}

button {
  padding: 10px 20px;
  font-size: 1.5em;
  color: #333;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}
#increase {
  color: #007bff;
  border: 2px solid #333;
}
#decrease {
  color: #ff4a4a;
  border: 2px solid #333;
}
#save {
  color: #03ff4a;
  border: 2px solid #333;
}
#reset {
  color: #684aff;
  border: 2px solid #333;
}
button:hover {
  opacity: 0.9;
}
button:active {
  opacity: 0.8;
}

ul {
  list-style-type: none;
  font-size: 2em;
  font-weight: bold;
  color: #333;
}