body {
  background-color:#000;
  margin:0;
  overflow:hidden;
  padding:0;
}


.button{  
  flex-wrap: wrap;
  text-decoration:none;
  width:180px;
  padding: 10px 10px 10px 10px;
  color: #00ee00;
  font-size: 18px;
  border: none;
  gap: 20px;
  margin: 0;
  justify-content: space-evenly;
  box-shadow: none;
  border: 2px solid #00ee00;
  text-align: center;
  display: inline-block;
  
}

.button:hover {
 background-color: #00ee00;
 color:white;

}

.screen {
  animation:colorPulse 5s infinite ease-in-out;
  background-image:radial-gradient(#444, #111);
  box-shadow:0 0 5vmin 1vmin #000 inset;
  box-sizing:border-box;
  font-family:'Fira Mono', monospace;
  font-size:20px;
  height:100vh;
  overflow:hidden;
  padding:10vmin;
  width:100vw;
}

.screen:before {
  animation:wave 10s infinite ease-in-out;
  content:"";
  height:20vh;
  left:0;
  opacity:.5;
  position:absolute;
  right:0;
  z-index:1;
}

.screen:after {
  background-image:linear-gradient(transparent, transparent 3px, #222);
  background-size:4px 4px;
  bottom:0;
  content:"";
  left:0;
  pointer-events:none;
  position:absolute;
  right:0;
  top:0;
  z-index:2;
}

p:last-child:after {
  animation:blink 1s infinite;
  content:"_";
}

@keyframes colorPulse {
  0%, 100% {
    color:#0c0;
  }
  48%, 52% {
    color:#090;
  }
  50% {
    color:#060;
  }
}

@keyframes wave {
  0% {
    box-shadow:0 -10vh 20vh #0c0;
    top:-100vh;
  }
  48%, 52% {
    box-shadow:0 -10vh 20vh #090;
  }
  50% {
    box-shadow:0 -10vh 20vh #060;
  }
  100% {
    box-shadow:0 -10vh 20vh #0c0;
    top:200vh;
  }
}

@keyframes blink {
  50% {
    opacity:0;
  }
}