/* styles.css */

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background: #f4f4f4;
    color: #555;
   overflow: auto;
}

.container {
    width: 80%;
    margin: auto;
    overflow: hidden;
}

header {
    background: #333;
    color: #fff;
    padding-top: 30px;
    min-height: 70px;
    border-bottom: #e8491d 3px solid;
}

header a {
    color: #fff;
    text-decoration: none;
    text-transform: uppercase;
    font-size: 16px;
}

header ul {
    padding: 0;
    list-style: none;
}

header li {
    display: inline;
    padding: 0 20px 0 20px;
}

header #branding {
    float: left;
}

header #branding h1 {
    margin: 0;
}

header nav {
    float: right;
    margin-top: 10px;
}

header .highlight, header .current a {
    color: #e8491d;
    font-weight: bold;
}

header a:hover {
    color: #ffffff;
    font-weight: bold;
}

section#main {
    padding: 15px;
    background: #fff;
    margin-top: 20px;
    box-shadow: 0 0 10px 0 rgba(0,0,0,0.1);
}

section#main .content-title {
    color: #333;
    border-bottom: 2px solid #e8491d;
    padding-bottom: 10px;
    margin-bottom: 20px;
}

section#main .content {
    float: left;
    width: 70%;
    padding: 20px;
}

section#main aside {
    float: right;
    width: 30%;
    background: #f4f4f4;
    padding: 20px;
    margin-top: 20px;
}

section#main aside ul {
    list-style: none;
    padding: 0;
}

section#main aside li {
    padding: 10px 0;
    border-bottom: 1px solid #ccc;
}

footer {
    background: #333;
    color: #fff;
    text-align: center;
    padding: 10px;
    position: relative;
    bottom: 0;
    width: 100%;
    margin-top: 20px;
}

footer p {
    margin: 0;
}

/* 美化链接样式 */
a {
    transition: color 0.3s ease;
}

/* 美化标题样式 */
h1, h2, h3 {
    color: #333;
}

/* 美化段落样式 */
p {
    margin-bottom: 20px;
    text-align: justify;
}

/* 美化图片样式 */
img {
    width: 500px;
    height: auto;
}