@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500&display=swap');
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins',sans-serif;
}

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

.center{
    display: flex;
    text-align: center;
    align-items: center;
    justify-content: center;
}

.outer{
    position: relative;
    margin: 0 50px;
    background: #111;
}
.button{
    height: 70px;
    width: 220px;
    border-radius: 50px;
}
.circle{
    height: 200px;
    width: 200px;
    border-radius: 50%;
}

.outer button, .outer span{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
}

.outer button{
    background: #111;
    color: #f2f2f2;
    outline: none;
    border: none;
    z-index: 9;
    font-size: 20px;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
}
.button button{
    height: 60px;
    width: 210px;
    border-radius: 50px;
}
.circle button{
    height: 180px;
    width: 180px;
    border-radius: 50%;
}
.outer span{
    height: 100%;
    width: 100%;
    background: inherit;
}

.button span{
    border-radius: 50px;
}
.circle span{
    border-radius: 50%;
}
.outer:hover span:nth-child(1){
    filter: blur(7px);
}

.outer:hover span:nth-child(2){
    filter: blur(14px);
}

.outer:hover{
    animation: rotate 1.5s linear infinite;
    background: linear-gradient(#14ffe9,#ffeb3b,#ff00e0);

}

a:link{
    color: rgb(0, 0, 0);
    background-color: transparent;
    text-decoration: none;
}
@keyframes rotate{
    0%{
        filter: hue-rotate(0deg);
    }
    100%{
        filter: hue-rotate(360deg);
    }
}