body {
    margin: 0;
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #1e007a, #4b0082, #00bfff, #ff69b4);
    background-size: 400% 400%;
    animation: gradientAnimation 15s ease infinite;
    color: #ffffff;
    overflow-x: hidden;
}

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

h1, h2, h3 {
    font-weight: bold;
    background: -webkit-linear-gradient(#ff69b4, #00bfff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    padding: 20px;
    max-width: 1200px;
    margin: auto;
}

.item {
    flex: 1 1 calc(33.33% - 20px);
    margin-bottom: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 15px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.button {
    position: relative;
    padding: 10px 20px;
    border: none;
    background-color: #00bfff;
    color: #ffffff;
    transition: all 0.3s ease;
    cursor: pointer;
    font-size: 16px;
    border-radius: 5px;
}

.button:hover {
    background-color: #ff69b4;
}

.button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: scale(0);
    transition: all 0.3s ease;
}

.button:hover::before {
    transform: scale(1.2);
    opacity: 0;
}

pre {
    background: rgba(0, 0, 0, 0.5);
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}

code {
    color: #00bfff;
    font-size: 14px;
}

@media (max-width: 768px) {
    .item {
        flex: 1 1 calc(50% - 20px);
    }
}

@media (max-width: 480px) {
    .item {
        flex: 1 1 100%;
    }
}

header {
    text-align: center;
    padding: 50px 20px;
}

header h1 {
    font-size: 3em;
    margin-bottom: 10px;
}

header p {
    font-size: 1.2em;
    line-height: 1.6;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: auto;
    border-radius: 10px;
}