<div class="smiley">
  <div class="face">
    <div class="eye-grp">
      <div class="eye left"></div>
      <div class="eye right"></div>
    </div>
    <div class="mouth"></div>
  </div>
</div>

body {
  background: #FFECB3;
  background-image: url("data:image/svg+xml,%3Csvg width='52' height='26' viewBox='0 0 52 26' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23f5cb4e' fill-opacity='0.3'%3E%3Cpath d='M10 10c0-2.21-1.79-4-4-4-3.314 0-6-2.686-6-6h2c0 2.21 1.79 4 4 4 3.314 0 6 2.686 6 6 0 2.21 1.79 4 4 4 3.314 0 6 2.686 6 6 0 2.21 1.79 4 4 4v2c-3.314 0-6-2.686-6-6 0-2.21-1.79-4-4-4-3.314 0-6-2.686-6-6zm25.464-1.95l8.486 8.486-1.414 1.414-8.486-8.486 1.414-1.414z' /%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  height: 100vh;
}

.smiley {
  position: absolute;
  transform: translate(-50%, -50%);
  left: 50%;
  top: 50%;
  height: 250px;
  width: 250px;
}

.face {
  position: relative;
  height: 250px;
  width: 250px;
  border-radius: 50%;
  background: #FFDB57;
  box-shadow: inset -10px -10px 0 0 #ffcb05;
}

.eye {
  position: absolute;
  height: 40px;
  width: 30px;
  background: #191F45;
  border-radius: 50%;
  top: 70px;
}

.left {
  left: 60px;
}

.right {
  right: 60px;
}

.eye::after {
  content: "";
  height: 20px;
  width: 15px;
  border-radius: 50%;
  background: #fff;
  position: absolute;
  left: 4px;
  top: 4px;
}

.mouth {
  width: 120px;
  height: 60px;
  border: 5px solid #191F45;
  border-radius: 5px 5px 60px 60px;
  background: #191F45;
  position: absolute;
  bottom: 45px;
  left: 50%;
  transform: translateX(-50%);
  overflow: hidden;
  box-sizing: border-box;
}

.mouth::after {
  content: "";
  width: 100px;
  height: 50px;
  background: #EE6055;
  border-radius: 50px 50px 0 0;
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
}