button {
    background-color: transparent;
    border: none;
}

button:hover {
    opacity: .7;
}

button:active {
    opacity: .3;
}

@keyframes fade {
    0% {
        opacity: 0;
        transform: translateY(45px) translateX(35%);
    }

    100% {
        transform: translateY(80px) translateX(35%);
    }
}

@keyframes out {
    0% {
        transform: translateY(80px) translateX(35%);
    }

    100% {
        opacity: 0;
        transform: translateY(45px) translateX(35%);
    }
}