* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background-color: ;
  color: white;
}

.container {
  width: 360px;
  height: 240px;
  background-color: #1b1b1b;
  padding: 40px;
  border-radius: 8px;
  text-align: center;
}

.btn {
  margin: 0 4px;
  padding: 7px 12px;
  background-color: #3d3f43;
  border: none;
  border-radius: 3px;
  color: white;
  font-size: 12px;
}

h1 {
  margin-top: 20px;
  font-size: 64px;
  display: flex;
  justify-content: center;
}

.startbtn {
  margin-top: 10px;
  padding: 6px 15px;
  border-radius: 2px;
  border: none;
}