*{
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: sans-serif;
}

body{
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    text-align: center;
    flex-direction: column;
    background: linear-gradient(
        145deg,
        rgb(43, 246, 185),
         rgb(92, 119, 240),
         rgb(167, 13, 167), 
         rgb(237, 22, 151), 
         rgb(64, 92, 249), 
         rgb(176,13,201)
    );
    background-size: 200%;
    animation: backgroundPro 20s infinite;
}

@keyframes backgroundPro {
    0%{
     background-position: 0;
    }
    50%{
        background-position: 100%;
    }
    100%{
        background-position: 0;
    }
}


h3, button{
    padding: 1rem;
}

h3{
    font-size: 1.5rem;
    color: ghostwhite;
}

button{
    font-size: 1rem;
    cursor: pointer;
    outline: none;
    border: none;
    border-radius: 2px;
    background-color: #4CAF50;
    color: #fff;
    transition: background 0.3s ease;
}

button:hover{
    background-color: #117d9e;
    color: #e4f316;
}

.message{
    margin: 1rem;
    padding: 1rem;
    background-color: greenyellow;
    color: #000;
    border-radius: 5px;
    transition: ease-in-out;
    opacity: 0;
}

.after-clicked{
    opacity: 1;
}