main.css

@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@600&display=swap");
body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    flex-direction: column-reverse;
    font-family: 'Poppins', sans-serif;
    user-select: none;
    background-color: rgb(161, 132, 132);
    overflow: hidden;
}

* {
    box-sizing: border-box;
}

.pg-container {
    background-color: white;
    width: 40%;
    min-height: 30%;
    border-radius: 0.3rem;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 0px 10px rgba(15, 14, 14, 0.705);
}

.pg-txt {
    width: 100%;
    height: 70px;
    background-color: rgb(91, 146, 146);
    display: flex;
    border-radius: 0.3rem;
    position: relative;
    padding: 0.5rem;
    color: white;
}

#pg-btn {
    position: absolute;
    bottom: 10px;
    right: 0%;
    padding: 0.4rem 0.5rem;
    border-radius: 0.3rem;
    font-size: 0.9rem;
    background-color: darkorchid;
    color: white;
    border: none;
    cursor: pointer;
    outline: none;
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.6, -0.28, 0.735, 0.045);
    font-family: inherit;
    transform: translateY(10px);
}

.pg-txt:hover #pg-btn {
    opacity: 1;
    transform: translateY(0px);
}

.pg-control {
    width: 100%;
    display: flex;
    justify-content: space-between;
    margin: 0.5rem;
}

#generator {
    width: 80%;
    padding: 0.4rem 0.4rem;
    font-size: 1.1rem;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    outline: none;
    background-color: yellowgreen;
    transition: all 0.45s;
    font-family: inherit;
}

#generator:hover {
    background-color: rgb(128, 170, 43);
}

#generator:active {
    transform: scale(0.9);
}

.copyBox {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: rgb(193, 245, 141);
    padding: 0.6rem 1rem;
    border-radius: 0.4rem;
    animation: slide 0.4s;
}

@keyframes slide {
    from {
        transform: translateX(200px);
    }
    to {
        transform: translateX(0px);
    }
}