body {
    font-family: sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(to bottom, #e0f7fa, #c8e6c9); /* 蓝色和绿色渐变 */
    color: #333;
}

header {
    background: linear-gradient(to right, #03a9f4, #4caf50); /* 蓝色和绿色渐变 */
    color: #fff;
    padding: 1em;
    text-align: center;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.language-switcher button {
    background-color: #555;
    color: #fff;
    border: none;
    padding: 0.5em 1em;
    cursor: pointer;
    margin-left: 0.5em;
    border-radius: 3px;
}

.language-switcher button:hover {
    background-color: #777;
}

main {
    padding: 20px;
}

.blog-post {
    background-color: #fff;
    padding: 1em;
    margin-bottom: 1em;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.blog-post:hover {
    transform: translateY(-5px);
}

.blog-post h2 {
    margin-top: 0;
}

.blog-post a {
    text-decoration: none;
    color: #007bff;
}

.blog-post a:hover {
    text-decoration: underline;
}