@charset "UTF-8";

body {
    margin: 0;
    padding: 0;
}

h1,h2,h3,h4,h5,h6 {
    margin: 0;
    padding: 0;
    font-weight: normal;  /* 可选：重置字体粗细 */
}

ul,ol {
    padding: 0;
    margin: 0;
    list-style: none;   /* 移除列表项目符号 */
}

li {
    margin: 0;
    padding: 0;
}

header {
    background-color: #ffebee;
    padding: 20px;
    margin: 0;
    border-bottom: 2px solid #e74c3c;
}

nav {
    background-color: #34495e;
    padding: 10px 0;
}

main {
    background-color: #e8f5e9;
    padding: 20px;
    width: 1200px;
    margin: 15px auto;
    min-height: 80vh; 
}

section {
    background-color: #e3f2fd;
    margin-bottom: 30px;
    border: 2px dashed #ccc;
    padding: 15px;
}

footer {
    background-color: #fff3e0;
    padding: 20px;
    margin: 0;
}

header,footer {
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: #2c3e50;
}

header p {
    font-size: 1.2rem;
    margin: 0;
    color: #7f8c8d;
}

section h2 {
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 1.8rem;
}

section p {
    line-height: 1.6;
    margin-bottom: 15px;
}