body {
    font-family: '微软雅黑', 'Microsoft YaHei', sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    color: #333;
}

header {
    background-color: #0077cc;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
}

h1 {
    margin: 0;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0.5rem 0;
}

nav ul li {
    display: inline;
    margin: 0 1rem;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
}

.hero {
    position: relative;
    text-align: center;
    color: white;
}

.hero img {
    width: 100%;
    height: auto;
    display: block;
}

.hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0, 0, 0, 0.5);
    padding: 2rem;
    border-radius: 5px;
}

.hero-content h2 {
    margin-top: 0;
}

.button {
    display: inline-block;
    background-color: #0099dd;
    color: white;
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 5px;
}

.intro, .call-to-action {
    padding: 2rem;
    text-align: center;
}

.call-to-action ul {
    list-style: none;
    padding: 0;
}

.call-to-action li {
    margin-bottom: 1rem;
}

.content-block {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1rem;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.content-block img {
    width: 200px;
    height: 150px;
    object-fit: cover;
    margin-right: 1rem;
    border-radius: 5px;
}

.content-block h3 {
    margin-top: 0;
}

section h2{
    text-align: center;
}

section ul{
    margin: 30px;
}

footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 1rem 0;
}