.jumbotron-extend {
    height: 100vh;
    min-height: 350px;
    margin-bottom: 60px;
    background: url(../images/tyuusyou-3.png) no-repeat center center;
    background-size: cover;
}
.jumbotron-container {
    position: relative;
    top: 35%;
    -webkit-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
    padding-left: 30px;
    padding-right: 30px;
}
.site-name {
    margin-bottom: 60px;
    font-family: 'Playfair Display', serif;
}
.contents {
    max-width: 990px;
    margin: 0 auto;
}
.content-primary,
.content-secondary {
    padding-left: 0;
    padding-right: 0;
}
.content-primary {
    float: left;
    width: 30%;
}
.content-secondary {
    float: right;
    width: 70%;
}