body {
    margin: 0;
    overflow: hidden;
    background-color: #e0f7fa;
    font-family: sans-serif;
}

#bubble-container {
    position: relative;
    width: 100vw;
    height: 100vh;
}

.bubble {
    position: absolute;
    width: 150px;
    height: 150px;
    background-color: #3498db;
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    cursor: pointer;
    user-select: none;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    font-size: 1.2em;
    transition: transform 0.2s ease-in-out;
}

.bubble:hover {
    transform: scale(1.1);
}

.modal {
    display: none;
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.4);
}

.modal-content {
    background-color: #fefefe;
    margin: 15% auto;
    padding: 20px;
    border: 1px solid #888;
    width: 80%;
    max-width: 500px;
    border-radius: 10px;
    position: relative;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.close-button {
    color: #aaa;
    position: absolute;
    top: 10px;
    right: 20px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close-button:hover,
.close-button:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}