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

body {
    background: rgb(2, 25, 31);
    display: flex;
    height: 100vh;
    justify-content: center;
    align-items: center;
}
a{
    text-decoration: none;
}
.btn {
    width: 300px;
    height: 80px;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.btn h2 {
font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;    font-weight: 900;
    text-align: center;
    color: rgb(209, 199, 121);
    letter-spacing: 3px;
    border: 5px solid rgb(255, 251, 15);
    padding: 15px 50px;
    border-radius: 5px;
    background: rgb(101, 81, 0);
    box-shadow: rgba(255, 227, 89, 0.887) 0 0 15px 1px, rgb(255, 233, 93) inset 0 0 10px -2px;
    text-shadow: rgb(255, 230, 0) 0px 0px 2px;
}

.btn .smokebox {
    position: absolute;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    
}

.btn .smokebox span {
    position: relative;
    top: 0;
    left: 0;
    display: block;
    margin: 5px;
    animation: anime 2.3s linear infinite;
    animation-delay: calc(var(--i) * 0.9s);
}

@keyframes anime {
    0% {
        opacity: 0.5;
        top: 80px;
        left: 0px;
        box-shadow: #6cffe2 0px 0px 10px 0px;
        width: 0px;
        height: 0px;
        background: #ffe48d;
        transform: rotateZ(0deg);
        border-radius: 0%;

    }

    50% {
        
        opacity: 1;
        background: #ffedb0;
        box-shadow: #ffc721 0px 0px 20px 1px;
        width: 10px;
        height: 10px;
        transform: rotateY(360deg);
    }

    100% {
        opacity: 0;
        top: -200px;
        box-shadow: #6cffeb 0px 0px 0px 0px;
        width: 0px;
        height: 0px;
        background: #ffe9a2;
        transform: rotateZ(0deg);
        border-radius: 0%;

    }
}