day-4.css

.device {
  background: #000;
  border-radius: 3rem;
  box-shadow: 0 4px 15px rgba(0,0,0,.6);
  border: 1px solid rgba(48,48,47,.5);
  height: 340px;
  margin-left: -80%;
  position: absolute;
  top: 20px;
  left: 80%;
  padding: 3px;
  width: 180px;
  transform: rotateY(40deg);
  transition: margin 1s ease-in, transform 2s ease-in;
}

.device:before {
  background: #333;
  border-radius: 3rem;
  box-shadow: 0 1px 9px rgba(0,0,0,.6);
  content: '';
  display: block;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
}

.device:after {
  background: linear-gradient(45deg,rgba(255,255,255,0) 60%,rgba(255,255,255,.5) 100%);
  border-radius: 3rem;
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 1;
}

.screen {
  background: radial-gradient(ellipse at center,rgba(0,0,0,.65) 0,rgba(0,0,0,0) 100%);
  background-color: #000;
  border-radius: 3rem;
  border: 3px solid #000;
  height: 100%;
  position: relative;
}

.speaker {
  background: #000;
  border-radius: 7px;
  box-shadow: 0 1px 0 rgba(255,255,255,.125);
  height: 0.6rem;
  position: absolute;
  top: 25px;
  left: 65px;
  width: 2.7rem;
  z-index: 2;
}

.content { background: url(http://placehold.it/154x232/ffcc00); height: 232px; position: absolute; top: 45px; left: 6px; width: 154px; }

.button {
  background: #333;
  border-radius: 0 0 7px 7px;
  box-shadow: 0 1px 0 rgba(255,255,255,.125);
  height: 0.6em;
  margin-left: 0;
  position: absolute;
  bottom: 17px;
  left: 65px;
  width: 3rem;
  z-index:2;
}

.button:after {
  background: #797e80;
  border: 0;
  border-radius: 0 0 0.4rem 0.4rem;
  box-shadow: inset 0 2px 4px #000;
  content: '';
  display: block;
  height: 0.5rem;
  margin: 0 auto;
  position: relative;
  top: 0;
  left: 0;
  overflow: hidden;
  width: 2.7rem;
}