*{box-sizing: border-box; margin: 0; padding: 0;}
*::before,*::after{box-sizing: border-box;}
.skin{
    position: relative;
    /* 占满全屏 */
    height: 100vh;
    background: #ffe600;
}

.nose{
    border: 10px solid black;
    border-color: black transparent transparent transparent;
    width: 0px;
    height: 0px;
    position: relative;
    left: 50%;
    top: 145px;
    margin-left: -10px;
    z-index: 10;
}
/* 将圆弧形相对于三角形定位 */
.yuan{
    position: absolute;
    height: 6px;
    width: 20px;
    top: -16px;
    margin-left: -10px;
    /* border-radius的大小不会超过height */
    border-radius: 10px 10px 0 0;
    background: black;
}
/* 动鼻子 */
@keyframes wave{
    0%{
        transform: rotate(0deg);
    }
    25%{
        transform: rotate(-5deg);
    }
    50%{
        transform: rotate(0deg);
    }
    75%{
        transform: rotate(5deg);
    }
    100%{
        transform: rotate(0deg);
    }
}
.nose:hover{
    /* 让鼻子围绕中间底部点抖动 */
    /* transform-origin: 50% bottom; */
    /*浮动 周期1s 永动 线性变化*/
    animation: wave 300ms infinite linear;
}


.eye::before{
    content: '';
    display: block;
    border: 3px solid #000;
    width: 30px;
    height: 30px;
    background: #fff;
    border-radius: 50%;
    position: absolute;
    left: 4px;
    top: 2px;
}
.eye{
    height: 64px;
    width: 64px;
    border: 2px solid #000;
    left: 50%;
    top: 100px;
    position: absolute;
    margin-left: -32px;
    background: #2e2e2e;
    border-radius: 50%;
}
.eye.left{
    transform: translateX(-100px);
}
.eye.right{
    transform: translateX(100px);
}


.mouth{
    /* border: 1px solid red; */
    height: 200px;
    width: 200px;
    position: relative;
    left: 50%;
    top: 170px;
    margin-left: -100px;
}
.mouth .up{
    position: relative;
    top: -20px;
    z-index: 1;
}
.mouth .up .lip{
    border: 3px solid black;
    height: 30px;
    width: 100px;
    border-top-color: transparent;
    border-right-color: transparent;
    position: relative;
    position: absolute;
    left: 50%;
    margin-left: -50px;
    background: #ffe600;
}
.mouth .up .lip.left{
    border-radius: 0 0 0 50px;
    transform: rotate(-15deg) translateX(-53px);
}
.mouth .up .lip.right{
    border-radius: 0 0 50px 0;
    transform: rotate(15deg) translateX(53px);
}
.mouth .up .lip::before{
    content: '';
    display: block;
    width: 7px;
    height: 30px;
    position: absolute;
    bottom: 0;
    background: #ffe600;
}

.mouth .up .lip.left::before{
    right: -6px;
}
.mouth .up .lip.right::before{
    left: -6px;
}
.mouth .down{
    height: 180px;
    position: absolute;
    top: 5px;
    width: 100%;
    /* 把多余的椭圆形舌头部分隐藏掉 */
    overflow: hidden;
}
.mouth .down .yuan1{
    border: 3px solid black;
    width: 150px;
    height: 1000px;
    position: absolute;
    bottom: 0;
    left: 50%;
    margin-left: -75px;
    border-radius: 75px/300px;
    background: #9b000a;
    overflow: hidden;
}
.mouth .down .yuan1 .yuan2{
    width: 200px;
    height: 296px;
    position: absolute;
    bottom: -155px;
    left: 50%;
    margin-left: -100px;
    border-radius: 100px;
    background: #ff485f;
}


.check{
    position: absolute;
    left: 50%;
    border: 3px solid black;
    width: 88px;
    height: 88px;
    top: 226px;
    margin-left: -44px;
    z-index: 3;
}
.check > img{
    top: 50%;
    left: 50%;
    position: absolute;
}
.check.left >img{
    transform: rotateY(180deg);
    transform-origin:0 0;
}
.check.left{
    transform: translateX(-180px); 
    background: #ff0000;
    border-radius: 50%;
}
.check.right{
    transform: translateX(180px);
    background: #ff0000;
    border-radius: 50%;
}