<button class="btn">hover me</button>

body {
    display: flex;
    height: 100vh;
    align-items: center;
    justify-content: center;
    background-image: radial-gradient(#535350, #111);
}
$base-color: darkorange;
@keyframes anim {
    0% {
        transform: rotateY(0deg);
    }
    100% {
        transform: rotateY(360deg);
    }
}
@keyframes anim2 {
    0% {
        text-shadow: 0em 0em 0px rgba($base-color, 0);
        transform: rotateY(0deg);
    }
    60% {
        text-shadow: 0em -4em 0px rgba($base-color, 1);
    }
    100% {
        text-shadow: 0em -8em 0px rgba($base-color, 0);
        transform: rotateY(360deg);
    }
}
.btn {
    position: relative;
    cursor: pointer;
    border: none;
    box-sizing: border-box;
    font-weight: bold;
    perspective: 200px;
    padding: 20px 60px;
    text-transform: uppercase;
    display: inline-block;
    color: white;
    font-size: small;
    background-color: $base-color;
    border-radius: 5px;
    transition: all 700ms;
    &:after,
    &:before {
        content: 'great job';
        //font-size: large;
        transition: all 300ms;
        box-sizing: border-box;
        opacity: 0;
        position: absolute;
        display: flex;
        justify-content: center;
        align-items: center;
        padding: 1em;
        top: -10%;
        left: -10%;
        width: 120%;
        height: 120%;
        border-radius: 6px;
        border: 3px solid $base-color;
        color: $base-color;
        animation-name: anim;
        animation-duration: 4s;
        animation-iteration-count: infinite;
        animation-timing-function: linear;
        animation-fill-mode: backwards;
    }
    &:after {
        content: 'goooood!';
        color: transparent;
        animation-name: anim2;
        animation-delay: 1s;
        //animation-fill-mode: none;
        //animation-duration: 2s;
        //animation-iteration-count: 1;
        //animation-timing-function: ease;
    }
    &:hover {
        background-color: transparent;
        color: transparent;
        //transform-origin: bottom center;
        //animation-name: anim2;
        //animation-duration: 1.5s;
        //animation-direction: alternate;
        //animation-iteration-count: 1;
        //animation-timing-function: linear;
        &:before,
        &:after {
            opacity: 1;
        }
    }
}