.container {
    max-width: 820px;
}
.img-fluid {
    max-height:600px;
}

/* 导航栏毛玻璃 */
 .navbar {
    background-color: rgba(255, 255, 255, 0.7);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    padding: 0;
}
/* 底部网安备案图标调整 */
#nis:before {
    content:url(beian.png);
    vertical-align: middle;
    display: inline-block;
    line-height: 20px;
}
/* 首页摘要里各种标题只用较大的粗体呈现 */
 .summary h1, .summary h2, .summary h3, .summary h4, .summary h5, .summary h6 {
    font-size: 1.2rem;
    font-weight: bold;
    line-height: 1.7;
}
/* post content style */
article, article .post-title a {
    color: #172b4d;
}
article{
    font-size: 1rem;
    font-weight: 300;
    line-height: 1.7;
}
blockquote {
    padding: 25px 50px 25px 40px;
    border-left: 10px solid #ddd;
    background: #f7f7f7;
    font-family: Georgia, "Times New Roman", Times, Kai, "Kaiti SC", KaiTi, BiauKai, FontAwesome, serif;
}
blockquote:before {
    color: #ddd;
    content:"“";
    font-size: 6em;
    /*vertical-align: -.4em;*/
    margin-left: -40px;
    line-height: 0;
}
code, pre {
    font-family: Consolas,Menlo,Monaco,Andale Mono WT,Andale Mono,Lucida Console,Lucida Sans Typewriter,DejaVu Sans Mono,Bitstream Vera Sans Mono,Liberation Mono,Nimbus Mono L,Courier New,Courier,monospace;
    background: #f0f0f0;
    color: #444;
}
code {
    padding:.1em .5em;
}
.flex-container {
    display: flex;
    height: 100vh;
    flex-flow: column nowrap;
    justify-content: center;
    align-items: center;
    align-content: center;
}

.flex-footer {
    display: block;
}

.friend {
    height: 80px;
}