/* 一级标题 */

#navbar-example3 a {
    font-size: .8em;
    font-weight: 800;
}


/* 二级标题 */

#navbar-example3>nav>nav>a {
    font-size: .8em;
}

.page-all-content {
    width: 83%;
    position: relative;
    left: 21%;
}


/* 标题背景图 */

.bg-hero {
    background-color: #FEF8D9;
    background-image: url('https://static.igem.wiki/teams/4632/wiki/wiki/cover/lab-cover.png');
    background-repeat: no-repeat;
    background-size: 70% auto;
    background-position: 80%;
}


/* 手机：内容居中 */

@media (max-width:830px) {
    .page-all-content {
        width: 90%;
        left: 4%
    }
    /* 背景图手机位置 */
    .bg-hero {
        background-size: 70% auto;
        background-position: 80% 10%;
        height: 18rem;
    }
}