* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Courier New", Courier, monospace;
}

html,
body {
  background-color: #f5f5f5;
}

h1 {
  font-size: 75px;
  color: #111111;
}

p {
  font-size: 20px;
  color: #111111;
}

button,
input {
  width: 120px;
  height: 30px;
  padding: 2px;
  vertical-align: middle;
}

#container {
  display: flex;
  flex-wrap: wrap;
  box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.6);
  box-sizing: content-box;
}

body {
  display: flex;
  flex-direction: column;
  padding-top: 4vh;
  align-items: center;
  justify-content: center;
  gap: 2em;
}

input[type="range"] {
  -webkit-appearance: none; /* remove default styling */
  appearance: none;
  width: 100px;
  height: 6px;
  background: #ddd;
  border-radius: 3px;
  outline: none;
}

/* Track */
input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  background: #ddd;
  border-radius: 3px;
}
input[type="range"]::-moz-range-track {
  height: 6px;
  background: #ddd;
  border-radius: 3px;
}

/* Thumb (the draggable knob) */
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  background: #333;
  border-radius: 50%;
  cursor: pointer;
  margin-top: -5px; /* centers thumb on track */
}

footer {
  margin-top: auto;
  font-size: 0.9rem;
}