A Pure CSS Animated Holiday Mug with Christmas Tree

// CSS
.mug-container {
    position: relative;
    width: 100%;
    height: 70vh;
    background-color: #b91a5f;
    overflow: hidden;
    z-index: -1;
}
 
.mug {
    width: 260px;
    height: 160px;
    background-color: #e9f5a9;
    border-bottom-left-radius: 260px;
    border-bottom-right-radius: 260px;
    margin-top: -80px;
    margin-left: -147px;
    position: absolute;
    top: 60%;
    left: 50%;
}
.mug:before {
    position: absolute;
    color: #e85a71;
    content: "≈";
    font-family: "Times New Roman", Times, serif;
    font-size: 90px;
    font-weight: 700;
    line-height: 0;
    top: 0;
    left: 40%;
    -webkit-animation-name: blend;
    animation-name: blend;
    -webkit-animation-duration: 2.3s;
    animation-duration: 2.3s;
    -webkit-animation-timing-function: linear;
    animation-timing-function: linear;
    -webkit-animation-delay: 2s;
    animation-delay: 2s;
    -webkit-animation-iteration-count: infinite;
    animation-iteration-count: infinite;
    transform: rotate(100deg) translate(50px);
    transform-style: preserve-3d;
    z-index: -1;
}
.mug:after {
    width: 85px;
    height: 95px;
    content: "";
    border: 28px solid #e9f5a9;
    border-radius: 50%;
    position: absolute;
    top: 0;
    right: -43px;
}
.mug__bottom {
    width: 87px;
    height: 13px;
    background-color: #e9f5a9;
    border-radius: 40%;
    margin-left: -44px;
    position: absolute;
    bottom: 0;
    left: 50%;
}
 
.tree {
    width: 0;
    height: 0;
    border-style: solid;
    border-top-width: 0;
    border-color: transparent transparent #e85a71 transparent;
    position: absolute;
    left: 50%;
}
 
.xmas {
    list-style-type: none;
}
.xmas__01 {
    border-right-width: 24px;
    border-bottom-width: 24px;
    border-left-width: 24px;
    margin-left: -24px;
    border-bottom-color: #41D3BD;
    top: 22px;
    z-index: 3;
}
.xmas__02 {
    border-right-width: 34px;
    border-bottom-width: 34px;
    border-left-width: 34px;
    margin-left: -34px;
    border-bottom-color: #2EC4B6;
    top: 30px;
    z-index: 2;
}
.xmas__03 {
    border-right-width: 42px;
    border-bottom-width: 42px;
    border-left-width: 42px;
    margin-left: -42px;
    border-bottom-color: #4eb2b3;
    top: 38px;
    z-index: 1;
}
.xmas__04 {
    border-right-width: 50px;
    border-bottom-width: 50px;
    border-left-width: 50px;
    margin-left: -50px;
    border-bottom-color: #519fa0;
    top: 45px;
    z-index: 0;
}
 
.serve {
    -webkit-animation-name: serve;
            animation-name: serve;
    -webkit-animation-duration: 1s;
            animation-duration: 1s;
    -webkit-animation-timing-function: linear;
            animation-timing-function: linear;
    animation-direction: reverse;
    -webkit-animation-fill-mode: forwards;
            animation-fill-mode: forwards;
}
 
@-webkit-keyframes blend {
    40%, 50% {
        color: #FADAD8;
    }
    80%, 100% {
        color: #e85a71;
        opacity: 0;
        font-size: 92px;
        transform: rotate(95deg) translate(-85px) scaleX(2);
    }
}
 
@keyframes blend {
    40%, 50% {
        color: #FADAD8;
    }
    80%, 100% {
        color: #e85a71;
        opacity: 0;
        font-size: 92px;
        transform: rotate(95deg) translate(-85px) scaleX(2);
    }
}
 
@-webkit-keyframes serve {
    100% {
        top: 150%;
    }
}
 
@keyframes serve {
    100% {
        top: 150%;
    }
}