body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #f0f0f0;
    margin: 0;
}

.container {
    position: relative; 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
}

#metal-sonic-img {
    display: block; 
    max-width: 300px; 
    height: auto;
}

.speech-bubble {
    position: absolute;
    bottom: 105%; 
    left: 70%; 
    width: 150px; 
    padding: 15px; 
    background: #fff;
    border-radius: 0.4em;
    box-shadow: 2px 2px 5px rgba(0,0,0,0.2);
    font-family: sans-serif;
    text-align: center;
    opacity: 0; 
    transition: opacity 0.3s ease-in-out;
    z-index: 10; 
}

.speech-bubble:after {
    content: '';
    position: absolute;
    top: 100%; 
    left: 20%; 
    width: 0;
    height: 0;
    border: 15px solid transparent; 
    border-top-color: #fff; 
    border-bottom: 0; 
    margin-top: 0; 
}

.speech-bubble.visible {
    opacity: 1; 
}

button {
    padding: 10px 20px;
    font-size: 1em;
    cursor: pointer;
}