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<div id="wrapper">

<div class="grid">
  <span class="server"></span>
  <span class="server"></span>
  <span class="server"></span>
  <span class="server"></span>
  <span class="server"></span>
</div>

<div class="content">          
  <h1>Currently Performing Maintenance.</h1>
</div>

</div>  

// Original: https://codepen.io/sampeniak/details/lbDfg

@import url(https://fonts.googleapis.com/css?family=Source+Sans+Pro:300,400);
html {font-size: 18px;}
body { 
  font-family: 'Source Sans Pro', sans-serif;
  line-height: 1.6;
  font-size: 1em;
  padding: 0 20px;
}

#wrapper {
  width: 410px;
  height: 350px;
  margin: 0 auto;
  
  position: absolute;
  top: 50%;
  left: 50%;
  margin-top: -175px;
  margin-left: -205px;
}


.content {
  width: 100%;
  margin: 0 auto;
  text-align: center;
}

h1 {
  font-weight: 300;
  font-size: 1.5em;
  color: #000;
}

p {
  font-family: 'Source Sans Pro', sans-serif;
  line-height: 1em;
  font-weight: 300;
  color: #333;
}

/* 
Server by @chrisburton
*/

.grid {
  max-width: 175px;
  height: 200px;
  background: #222;
  margin: 0 auto;
  padding: 1em 0;
  border-radius: 3px;
}


.grid .server {
  display: block;
  max-width: 68%;
  height: 20px;
  background: rgba(255,255,255,.15);
  box-shadow: 0 0 0 1px black inset;
  margin: 10px 0 20px 30px;
}

.grid .server:before {
  content: "";
  position: relative;
  top: 7px;
  left: -18px;
  display: block;
  width: 6px;
  height: 6px;
  background: green;
  border: 1px solid black;
  border-radius: 6px;
  margin-top: 7px;
}

/* Animation */

@-webkit-keyframes pulse {
  0% {background: rgba(255,255,255,.15);}
  100% {background: #ae1508;}
}

.grid .server:nth-child(3):before {
  background: rgba(255,255,255,.15);
  -webkit-animation: pulse .5s infinite alternate;
}

@-webkit-keyframes pulse_three {
  0% {background: rgba(255,255,255,.15);}
  100% {background: #d2710a;}
}

.grid .server:nth-child(5):before {
  background: rgba(255,255,255,.15);
  -webkit-animation: pulse_three .7s infinite alternate;
}

@-webkit-keyframes pulse_two {
  0% {background: rgba(255,255,255,.15);}
  100% {background: #9da506;}
}
.grid .server:nth-child(1):before {
  background: rgba(255,255,255,.15);
  -webkit-animation: pulse_two .1s infinite alternate;
}
.grid .server:nth-child(2):before {
  background: rgba(255,255,255,.15);
  -webkit-animation: pulse_two .175s infinite alternate;
}
.grid .server:nth-child(4):before {
  background: rgba(255,255,255,.15);
  -webkit-animation: pulse_two .1s infinite alternate;
}


@media only screen 
  and (min-device-width: 320px) 
  and (max-device-width: 480px)
  and (-webkit-min-device-pixel-ratio: 2) {
    html {font-size: 12px;}
}
@media only screen 
  and (min-device-width: 320px) 
  and (max-device-width: 568px)
  and (-webkit-min-device-pixel-ratio: 2) {
    html {font-size: 14px;}
}