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

body {
  height: 100vh;
  font-family: sans-serif;
  background: linear-gradient(#1c1c1c, #2c3e50);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

.error-box {
  text-align: center;
  padding: 40px;
  max-width: 500px;
}

.error-box h1 {
  display: inline-block;
  font-size: 10rem;
  background-image: linear-gradient(to right, #f44336, rgb(60, 255, 0));
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
}

.error-box p {
  font-size: 18px;
  margin: 20px 0;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  background: #f5b400;
  color: #000;
  border-radius: 6px;
  text-decoration: none;
  font-weight: bold;
  transition: 0.3s;
  margin-top: 1rem;
}

.btn:hover,
.btn:active {
  background: #e0a800;
  color: greenyellow;
  box-shadow: 0 1rem 2rem rgba(red, green, blue, 0.4);
  transform: rotate(5deg) scale(1.3);
}