body {
  font-family: Arial, sans-serif;
  background-color: #121212;
  color: #fff;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}
.container {
  width: 80%;
  max-width: 400px;
  text-align: center;
}
h1 {
  margin-bottom: 20px;
}
.response-container {
  margin-top: 20px;
  padding: 20px;
  border-radius: 5px;
  background-color: #333;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
#ip-address {
  flex-grow: 1;
}
#copy-button {
  background-color: transparent;
  border: none;
  color: #fff;
  cursor: pointer;
  margin-left: 10px;
}
#copy-button:hover {
  color: #007bff;
}