* {
  margin: 0;
  padding: 0;
  outline: none;
  box-sizing: border-box;
  font-family: sans-serif;
}

body {
  height: 100vh;
  background: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.75)),
    url(https://wallpapercave.com/wp/wp3378366.jpg);
  background-position: center;
  background-size: cover;
}

#error-frame {
  position: absolute;
  top: 10%;
  left: 15%;
  right: 15%;
  bottom: 10%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  box-shadow: 0px 5px 10px rgba(0, 0, 0, 0.1);
  border: 2px solid #2dbde8;
}

#error-frame .container {
  max-width: 600px;
  text-align: center;
}

.container h1 {
  font-size: 18vw;
  line-height: 1em;
  position: relative;
  text-shadow: 0 0 5px #2dbde8, 0 0 5px #2dbde8;
}

.container h4 {
  font-size: 1.8em;
  margin-bottom: 20px;
  text-transform: uppercase;
  color: #000;
  font-size: 2.1em;
  max-width: 600px;
  position: relative;
}

.container p {
  font-size: 1.2em;
  color: #0d0d0d;
}

.container .btn {
  margin: 25px 0;
  display: inline-flex;
}

.container .btn a {
  display: inline-block;
  margin: 0 10px;
  text-decoration: none;
  border: 2px solid #2dbde8;
  color: #2dbde8;
  font-weight: 500;
  padding: 10px 25px;
  border-radius: 25px;
  text-transform: uppercase;
  transition: all 0.5s ease;
}

.container .btn a:hover {
  background: #2dbde8;
  color: #fff;
}