body {
  font-family: Arial, sans-serif;
  height: 100vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  overflow: hidden;
  font-size: 15px;
  text-align: center;
}

h1 {
  font-size: 50px;
  vertical-align: text-top;
  margin: 10;
}

p {
  position: fixed;
  bottom: 10px;
  left: 10px;
  margin: 0;
}

body.dark-mode {
  background-color: #333;
  color: hsla(0, 0%, 87%, 0.454);
}

body.dark-mode .box {
  background-color: #006bb2;
}


.toggle-container {
  position: fixed;
  top: 40px;
  right: 10px;
}

.toggle {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.toggle-label {
  position: relative;
  display: block;
  width: 60px;
  height: 34px;
  cursor: pointer;
  background-color: #ccc;
  border-radius: 34px;
  transition: background-color 0.2s;
}

.toggle-label:before {
  content: "";
  position: absolute;
  display: block;
  width: 26px;
  height: 26px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  border-radius: 50%;
  transition: transform 0.2s;
}

.toggle:checked + .toggle-label {
  background-color: #2196F3;
}

.toggle:checked + .toggle-label:before {
  transform: translateX(26px);
}

nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1;
}

nav a {
  color: #ffffff;
  text-decoration: none;
  font-size: 24px;
  transition: color 0.3s;
}

nav a:hover {
  color: #9c9c9c;
}

/* box clicker */
.box {
  width: 300px;
  height: 300px;
  background-color: #b71fa0;
  cursor: pointer;
  position: absolute;
}

/* synth */
.synth-container {
  background-color: #fff;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  text-align: center;
}