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

body {
    font-family: 'Poppins', sans-serif;
}

.main {
    height: 100vh;
    width: 100vw;
    background-color: black;
    display: flex;
    justify-content: center;
    align-items: center;

}

.box-and-button {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 30px;

}

#box {
    height: 300px;
    width: 500px;
    background-color: darkgray;
    padding: 30px;
    transition: background-color 0.5s ease;

}

#box h1 {
    font-weight: 700;
    margin: 40px 0 10px 20px;
    font-size: 32px;

}

#box p {
    font-weight: 400;
    font-size: 18px;
    margin: 0;
}

.btn {
    height: 50px;
    width: 200px;
    background-color: rgb(159, 233, 233);
    color: black;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 1;
    transition: all 0.4s ease;
    border: 2px solid transparent;
    box-shadow: 0 0 10px 5px aqua;
}

.btn:hover {
    color: white;
    border: 2px solid aqua;
}

a {
    text-decoration: none;
}

.btn::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 20%;
    background-color: cornflowerblue;
    z-index: -1;
    transition: all 0.4s ease;


}

.btn:hover::before {
    height: 100%;
    width: 100%;

}