@keyframes wave {
    0%, 100% {background-position: 0 bottom;}
    50% {background-position: 100% bottom;}
}
/* Reset some basic elements */
body, h1, h2, h3, p {
    margin: 5;
    padding: 10;
}

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header styling */
header {
    background-color: #212529;
    padding: 1rem 0;
    text-align: center;
    color: white;
}

header h1 {
    margin: 0;
    font-size: 2rem;
    font-weight: normal;
}

/* Navigation */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #fff;
    padding: 10px 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

nav a {
    color: #333;
    text-decoration: none;
    margin: 0 10px;
}

nav a:hover {
    text-decoration: underline;
}

/* Main content */
main {
    margin-top: 2rem;
}

section {
    margin-bottom: 2rem;
}

/* Footer */
footer {
    background-color: #212529;
    color: white;
    text-align: center;
    padding: 1rem 0;
    margin-top: 4rem;
}

footer p {
    margin: 0;
}

/* Responsive design */
@media screen and (max-width: 768px) {
    nav {
        flex-direction: column;
        align-items: flex-start;
    }
}

#myButton {
    background-color: #4CAF50; /* 绿色背景 */
    border: none;
    color: white;
    padding: 15px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 20px 0;
    cursor: pointer;
}

/* 文章卡片 */
.article-card {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    border-radius: 4px;
    margin-bottom: 20px;
    overflow: hidden;
}

.article-card img {
    width: 100%;
    height: auto;
    border-top-left-radius: 4px;
    border-top-right-radius: 4px;
}

.article-content {
    padding: 20px;
}

.article-title {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #333;
}

.article-excerpt {
    color: #666;
    margin-bottom: 20px;
}

.read-more {
    display: inline-block;
    padding: 8px 16px;
    background-color: #007bff;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.read-more:hover {
    background-color: #0056b3;
}

/* 图片展示 */
.image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.image-gallery img {
    width: 100%;
    height: auto;
    border-radius: 4px;
    object-fit: cover;
}

/* 引导性按钮 */
.call-to-action {
    display: inline-block;
    padding: 12px 24px;
    background-color: #007bff;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    font-size: 1rem;
    margin-top: 20px;
    transition: background-color 0.3s ease;
}

.call-to-action:hover {
    background-color: #0056b3;
}