SOURCE

<div class="wrapper">
    <div class="nose"></div>
    <div class="eye left"></div>
    <div class="eye right"></div>
    <div class="face left"></div>
    <div class="face right"></div>
    <div class="upperLip left"></div>
    <div class="upperLip right"></div>
  <div class='lowerLip-wrapper'>
    <div class='lowerLip'></div>
  </div>
</div>

*{margin: 0;padding: 0;box-sizing: border-box;}
*::after,*::before{box-sizing: border-box;}
body{
    display: flex;
    flex-direction: column;
    height: 100vh;
    background-color: #ffdc2b;
}
.code-wrapper{
    flex: 1;
    height: 50%;
}
.preview-wrapper{
    flex: 1;
    height: 50%;
}
.preview{
    border:1px solid green;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #ffdc2b;
}
.wrapper{
    width: 100%;
    height: 165px;
    position: relative;
    
}
.wrapper>:not(:last-child){
    z-index: 1;
}

/* 画个鼻子 */
.nose{
    width: 0;
    height: 0;
    border: 12px solid transparent;
    border-top-color: #000;
    border-radius: 50%;
    position: absolute;
    left: 50%;
    top: 28px;
    transform: translateX(-50%)
}
/* 画眼睛 */
.eye{
    width: 49px;
    height: 49px;
    background: #2e2e2e;
    position: absolute;
    border-radius: 50%;
    border: 2px solid #000;
}
.eye::before{
    content: "";
    display: block;
    width: 24px;
    height: 24px;
    background: #fff;
    border-radius: 50%;
    position: absolute;
    left: 6px;
    top: -1px;
    border: 1px solid #000;
}
.eye.left{
    right: 50%;
    margin-right: 90px;
}
.eye.right{
    left: 50%;
    margin-left: 90px;
}
/* 画个脸颊 */
.face{
    width: 68px;
    height: 68px;
    background: #fc3d1c;
    border: 2px solid #000;
    border-radius: 50%;
    position: absolute;
    top: 85px;
}
.face.left{
    right: 57%;
    margin-right: 120px;
}
.face.right{
    left: 57%;
    margin-left: 120px;
}
/* 画个上嘴唇 */
.upperLip{
    height: 20px;
    width: 88px;
    border: 3px solid #000;
    position: absolute;
    top: 52px;
    background: #ffdc2b;
}
.upperLip.left{
    right: 50%;
    border-bottom-left-radius: 48px 28px;
    border-top: none;
    border-right: none;
    transform: rotate(-18deg);
}
.upperLip.right{
    left: 50%;
    border-bottom-right-radius: 40px 20px;
    border-top: none;
    border-left: none;
    transform: rotate(18deg);
}
/* 画个下嘴唇 */
.lowerLip-wrapper{
    position: absolute;
    bottom: 0;
    left: 50%;
    margin-left: -100px;
    height: 106px;
    width: 200px;
    overflow: hidden;
}
.lowerLip{
    border: 2px solid #000;
    width: 200px;
    height: 1000px;
    background: #a81414;
    border-radius: 208px/1000px;
    position: absolute;
    left:0;
    bottom: 0;
    overflow: hidden;
    

}
.lowerLip::after{
    content: '';
    width: 100px;
    height: 85px;
    background: #fc4a62;
    border-radius: 50%;
    position: absolute;
    bottom: 0;
    left: 50%;
    margin-left:-50px;
}