body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.container {
  background-color: #f9f9f9;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 400px;
}

h1 {
  text-align: center;
  color: #333;
}

form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

label {
  font-weight: bold;
  margin-bottom: 5px;
  display: inline-block;
  vertical-align: middle;
}

input {
  width: 100%;
  padding: 8px;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-sizing: border-box;
}

button {
  background-color: #3b82f6;
  color: white;
  border: none;
  padding: 10px;
  border-radius: 4px;
  cursor: pointer;
  font-weight: bold;
}

button:hover {
  background-color: #2563eb;
}

#error {
  color: #dc2626;
  margin-top: 10px;
}

#result {
  margin-top: 20px;
}

pre {
  background-color: #f3f4f6;
  padding: 10px;
  border-radius: 4px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-wrap: break-word;
}

#possible-range-sizes {
  margin-top: 20px;
}

.clickable {
  cursor: pointer;
  color: #3b82f6;
  text-decoration: underline;
}

.checkbox-container {
  display: flex;
  align-items: center;
}

.checkbox-container label {
  flex: 1;
  white-space: nowrap;
  margin-right: 10px;
}