@import url("https://fonts.googleapis.com/css2?family=Roboto:wght@400&display=swap");

* {
  box-sizing: border-box;
}

body {
  background-color: #111;
  height: 100vh;
  margin: 0;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  max-width: 400px;
}

.square {
  background-color: #1d1d1d;
  box-shadow: 0 0 2px #000;
  height: 16px;
  width: 16px;
  margin: 2px;
  transition: 2s ease;
}

.square:hover {
  transition-duration: 0s;
}

.fadeout {
  font-family: "Roboto", sans-serif;
  color: white;
  position: fixed;
  right: 20px;
  top: 20px;
  background-color: #1d1d1d;
  padding: 10px;
  border-radius: 4px;
}

.fadeout p {
  margin: 0 0 8px 0;
  text-align: center;
}

.fadeout input {
  display: none;
}

.fadeout label {
  background-color: #333;
  display: block;
  width: 80px;
  padding: 4px;
  border-radius: 4px;
  cursor: pointer;
}

.fadeout label .slider {
  display: block;
  width: 36px;
  height: 28px;
  position: relative;
  background-color: #000;
  border-radius: 4px;
  transition: transform 0.2s ease;
}

.fadeout input:checked + label .slider {
  transform: translateX(100%);
  background-color: green;
}

.fadeout label .slider .on,
.fadeout label .slider .off {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0;
}

.fadeout input:checked + label .slider .on {
  opacity: 1;
}

.fadeout input:not(:checked) + label .slider .off {
  opacity: 1;
}