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

#main-container {
    text-align: center;
}

.card {
    background-color: #ffffff;
    padding: 20px;
    margin-bottom: 30px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    border-radius: 10px;
}

.white-noise-icon {
    display: inline-block;
    margin: 20px;
    padding: 10px;
    background-color: #e0e0e0;
    border-radius: 5px;
    text-decoration: none;
    color: black;
    transition: transform 0.3s ease;
}

.white-noise-icon:hover {
    transform: scale(1.1);
}

.rain-icon i {
    color: blue; /* Change only the rain icon to blue */
}

.flame-icon i {
    color: red; /* Change only the flame icon to red */
}

.forest-icon i {
    color: green; /* Change only the flame icon to greed */
}

.water-icon i {
    color: deepskyblue; /* Change only the flame icon to deepskyblue */
}
/* This will keep the text color of the links unchanged */
.white-noise-icon {
    color: black;
}

/* Additional responsive and fancy styles */