body {
  margin: 0;
  text-align: center;
}

.outer { position: relative; }

.close {
  position: absolute;
  display: inline-block;
  padding: 10px 15px;
  color: #fff;
  background: #d30043;
  font-size: 15px !important;
  left: 5px;
  top: 5px;
}

h1 {
  text-align: center;
  font: 400 40px 'open sans', sans-serif;
  color: #fff;
  margin: 0;
  padding: 20px;
}

button {
  border: none;
  outline: none;
  background: #eee;
  color: #222;
  padding: 10px 20px;
  font: 300 20px 'open sans', sans-serif;
  transition: all .3s linear;
  -moz-transition: all .3s linear;
  -webkit-transition: all .3s linear;
}

button:hover {
  background: #d30043;
  color: #fff;
}

.main {
  padding: 20px 0;
  width: 100%;
  z-index: 2;
  position: relative;
  background: #002838;
  transition: margin-left .2s ease-in;
  -moz-transition: margin-left .2s ease-in;
  -webkit-transition: margin-left .2s ease-in;
  height: 600px;
}

.panel {
  background: #333;
  width: 300px;
  color: #fff;
  font: 300 50px 'open sans', sans-serif;
}

/* Overlay */

.overlayp {
  z-index: 3;
  position: absolute;
  left: 0;
  top: 0;
  margin-left: -300px;
  transition: margin-left .2s ease-in;
  -moz-transition: margin-left .2s ease-in;
  -webkit-transition: margin-left .2s ease-in;
}

.overlayp.active {
  margin-left: 0;
  box-shadow: 0 0 20px rgba(0,0,0,0.5);
}

/* Push */

.pushp {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 3;
  margin-left: -300px;
  transition: margin-left .2s ease-in;
  -moz-transition: margin-left .2s ease-in;
  -webkit-transition: margin-left .2s ease-in;
}

.pushp.active { margin-left: 0; }

.main.pactive { margin-left: 300px; }

/* Reveal */

.main.ractive {
  margin-left: 300px;
  width: 100%;
  box-shadow: 0 0 20px rgba(0,0,0,0.6);
}

.revealp {
  position: absolute;
  z-index: 1;
  left: 0;
  top: 0;
}