A CodePen by Mose. Face box-shadows

index.html

<div id="face">
  <div class="eye left"></div>
  <div class="eye right"></div>
  <div class="nose"></div>
  <div class="mouth"></div>
</div>

style.css

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
}
body{
  background: -webkit-linear-gradient(top, #369 0%, #fff 100%);
  background: -moz-linear-gradient(top, #369 0%, #fff 100%);
}
#face {
  background: #da9;
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100px;
  height: 150px;
  margin-top: -80px;
  margin-left: -3pc;
  text-align: center;
  border-radius: 90% 90% 50% 50%;
  border: 2px solid #000;
  box-shadow: 0 0 150px 100px #fff;
  cursor: pointer;
}
#face:active {
  width: 120px;
  height: 170px;
  margin-top: -80px;
  margin-left: -4pc;
  background: #e99;
}
.eye {
  position: absolute;
  top: 60px;
  width: 30px;
  height: 20px;
  background-color: #fff;
  background: -moz-radial-gradient(top, #246 40%, #fff 41%);
  background: -webkit-radial-gradient(top, #246 40%, #fff 41%);
  border: 1px solid #000;
  border-top: 4px solid #000;
  box-shadow: 
    inset 0px 2px 3px #000, 
    inset 0px -2px 1px #000,
    0 4px 6px 2px #da9,
    0 6px 0 5px #b87;
  z-index: 8;
}
#face:hover .eye {
  background: -moz-radial-gradient(center, #246 40%, #fff 42%);
  background: -webkit-radial-gradient(center, #246 40%, #fff 42%);
  height: 40px;
  top: 40px;
  -moz-transition: 1s;
  -webkit-transition: 1s;
  transition: 1s;
}
#face:active .eye {
  box-shadow: 
    inset 0px 2px 3px #000, 
    inset 0px -2px 1px #000,
    0 4px 6px 2px #e99,
    0 6px 0 5px #b87;
}
.eye.left {
  left: 15px;
  border-radius: 0 0 30% 50%;
}
#face:hover .eye.left {
  border-radius: 60% 30% 30% 60%;
  -moz-transition: 1s;
  -webkit-transition: 1s;
  transition: 1s;
}
.eye.right {
  right: 15px;
  border-radius: 0 0 50% 30%;
}
#face:hover .eye.right {
  border-radius: 30% 60% 60% 30%;
  -moz-transition: 1s;
  -webkit-transition: 1s;
  transition: 1s;
}
.left:after {
  content: '';
  position: absolute;
  border-radius: 5px 10px 0 0;
  height: 20px;
  top: -25px;
  left: -5px;
  right: -5px;
  z-index: 10;
  border-top: 8px solid #000;
  transform: rotate(10deg);
}
#face:hover .left:after {
  top: -15px;
  transform: rotate(-10deg);
  -moz-transition: 1s;
  -webkit-transition: 1s;
  transition: 1s;
}
.right:after {
  content: '';
  position: absolute;
  border-radius: 0 0 5px 10px;
  height: 20px;
  top: -35px;
  left: -5px;
  right: -5px;
  z-index: 10;
  border-bottom: 8px solid #000;
  transform: rotate(-10deg);
}
#face:hover .right:after {
  top: -15px;
  border-radius: 10px 5px 0 0;
  border-bottom: 0;
  border-top: 8px solid #000;
  transform: rotate(10deg);
}
.nose {
  position: absolute;
  height: 40px;
  width: 40px;
  background-color: #da9;
  left: 50%;
  top: 50%;
  margin-left: -20px;
  transform: rotate(45deg);
  border-radius: 100%;
  z-index: 5;
  box-shadow: 3px 3px 3px -3px #000, inset -2px 2px 1px #fff;
}
#face:active .nose {
  background-color: #e99;
  box-shadow: 3px 3px 3px -3px #000, inset -2px 2px 2px #fff;
}
.nose:before {
  content: '';
  position: absolute;
  border-radius: 0 0 5px 5px;
  background-color: #da9;
  height: 20px;
  width: 20px;
  top: 0px;
  left: 25px;
  z-index: 10;
  transform: rotate(-45deg);
  z-index: 3;
  box-shadow: 0 5px 3px -3px #000, inset -2px 2px 1px #fff;
}
#face:active .nose:before {
  background-color: #e99;
}
.nose:after {
  content: '';
  position: absolute;
  border-radius: 0 0 5px 5px;  
  background-color: #da9;
  height: 20px;
  width: 20px;
  top: 25px;
  left: 00px;
  z-index: 10;
  transform: rotate(-45deg);
  z-index: 2;
  box-shadow: -1px 5px 3px -3px #000, inset 2px 2px 1px #a97;
}
#face:active .nose:after {
  background-color: #e99;
}
.mouth {
  position: absolute;
  height: 20px;
  width: 50px;
  background-color: #d77;
  left: 25px;
  bottom: 10px;
  margin-left: -20px;
  transform: rotate(4deg);
  border-radius: 100%;
  box-shadow: 3px 3px 3px -3px #000, inset -2px 2px 1px #fff;
  border: 1px solid #000;
  z-index: 5;
}
.mouth:after {
  content: '';
  position: absolute;
  height: 10px;
  width: 80px;
  background-color: #d77;
  left: 15px;
  bottom: 10px;
  margin-left: -20px;
  transform: rotate(7deg);
  border-radius: 100%;
  box-shadow: 3px 3px 3px -3px #000, inset -2px 2px 1px #fff;
  border: 1px solid #000;
  z-index: 20;
}
#face:hover .mouth {
  width: 30px;
  bottom: 0px;
  left: 30px;
  -moz-transition: .1s;
  -webkit-transition: .1s;
  transition: .1s;
}
#face:hover .mouth:after {
  left: 20px;
  bottom: 5px;
  width: 30px;
  height: 20px;
  box-shadow: none;
  background-color: #000;
  -moz-transition: .1s;
  -webkit-transition: .1s;
  transition: .1s;
}