html, body {
  margin: 0;
  width: 100%;
  height: 100%;
  background-image: url('background.jpg'); 
  background-size: cover; 
  background-position: center; 
  background-repeat: no-repeat; 
  overflow: hidden;

}

body {
  display: flex;
  align-items: center;      /* vertical */
  justify-content: center;  /* horizontal */
}




#terminal, .terminal, .xterm {
  width: 90vw;
  height: 72vh;
  border: 2px solid #5eefff;
  border-radius: 8px;
  box-shadow:
    0 0 10px #5eefff,
    0 0 25px #00cfff,
    0 0 45px rgba(0, 207, 255, 0.85);
  overflow: hidden;
  scrollbar-width: none !important;

}
iframe {
  width: 90vw;
  height: 72vh;
  border: 0;
}