Animated Jelly Button

				
					* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

html,
body {
    display: grid;
    height: 100%;
    place-items: center;
    background: #e8e8e8;
}

.Btn {
    position: relative;
    width: 150px;
    height: 55px;
    border-radius: 45px;
    border: none;
    background-color: rgb(151, 95, 255);
    color: white;
    box-shadow: 0px 10px 10px rgb(210, 187, 253) inset,
        0px 5px 10px rgba(5, 5, 5, 0.212),
        0px -10px 10px rgb(124, 54, 255) inset;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.Btn::before {
    width: 70%;
    height: 2px;
    position: absolute;
    background-color: rgba(250, 250, 250, 0.678);
    content: "";
    filter: blur(1px);
    top: 7px;
    border-radius: 50%;
}

.Btn::after {
    width: 70%;
    height: 2px;
    position: absolute;
    background-color: rgba(250, 250, 250, 0.137);
    content: "";
    filter: blur(1px);
    bottom: 7px;
    border-radius: 50%;
}

.Btn:hover {
    animation: jello-horizontal 0.9s both;
}

@keyframes jello-horizontal {
    0% {
        transform: scale3d(1, 1, 1);
    }

    30% {
        transform: scale3d(1.25, 0.75, 1);
    }

    40% {
        transform: scale3d(0.75, 1.25, 1);
    }

    50% {
        transform: scale3d(1.15, 0.85, 1);
    }

    65% {
        transform: scale3d(0.95, 1.05, 1);
    }

    75% {
        transform: scale3d(1.05, 0.95, 1);
    }

    100% {
        transform: scale3d(1, 1, 1);
    }
}