body {
    font-family: 'Source Sans Pro', 'Helvetica Neue', Arial, sans-serif;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    color: #34495e;
    margin: 0;
}

a,
a:hover {
    text-decoration: none;
}

footer {
    text-align: center;
    margin-top: 80px;
}

a {
    color: #3c9ff5;
}


header {
    position: fixed;
    height: 60px;
    left: 0;
    right: 0;
    /* border-bottom: 1px solid #dcefff; */
    top: 0;
    z-index: 1;
    background: #FFF;
}

header>a>img {
    width: 40px;
    margin: 10px 5px 0px 20px;
    float: left;
}

header>a>h1 {
    font-family: 'Dosis', 'Source Sans Pro', 'Helvetica Neue', Arial, sans-serif;
    display: inline-block;
    font-weight: 100;
    margin: 10px;
    float: left;
}

header nav {
    position: absolute;
    right: 40px;
    line-height: 60px;
}


header nav a {
    color: #89c3f5;
    padding-bottom: 3px;
    margin: 0 10px;
    display: inline-block;
    font-size: 16px;
    padding: 0 15px;
    transition: .4s;
}

header nav a:hover {
    color: #0085f9;
    font-weight: 500;
}

header nav a.selected {
    background: #3c9ff5;
    color: #FFF;
}

section#right {
    padding-left: 300px;
    margin-top: 80px;
    line-height: 1.7;
    padding-right: 30px;
}

h1#manba {
    font-family: 'Dosis', 'Source Sans Pro', 'Helvetica Neue', Arial, sans-serif;
    font-size: 31px;
    font-weight: 100;
    margin: 30px 0 0 0;
}

section#left {
    width: 300px;
    position: fixed;
    box-sizing: border-box;
}

section#left ul {
    list-style: none;
    line-height: 2;
}

section#left ul li {
    cursor: pointer;
    transition: .2s;
}

section#left ul li.selected,section#left ul li:hover {
    color: #3c9ff5;
}

section#left ul li.H3 {
    font-size: 14px;
}
section#left ul li.H2 {
    font-weight:bold;
    font-size: 18px;
}
section#left ul li.H4 {
    font-size: 12px;
    margin-left: 20px;
}