@charset UTF-8;

body {
    font-family: "ヒラギノ角ゴ Pro W3", "Hiragino Kaku Gothic Pro", sans-serif, Verdana, "メイリオ", "Meiryo", "ＭＳ Ｐゴシック", "MS PGothic", Sans-Serif;
    background-image:url("images/column-background.png");
    background-attachment:fixed;
    background-repeat:no-repeat;
    background-position:center;
    background-color:#ffffff;
    background-size: cover;
}

* {
    margin: 0;
    padding: 0;
}

.site-header {
    background: #fff;
    width: 100%;
    height: 100px;
    position: relative;
    position: fixed;
    top: 0;
    padding: 0;
    z-index: 10;
}

.logo {
    position: absolute;
    margin-top: 38px;
    margin-left: 55px;
    cursor: pointer;
}

.logo a {
    text-decoration: none;
    outline: none;
}

.logo img {
    width: 155px;
    height: auto;
}

nav {
    font-size: 110%;
    float: right;
    height: auto;
    text-align: right;
    margin-right: 115px;
    margin-top: 45px;
}

nav a {
    text-decoration: none;
    outline: none;
}

nav li {
    border-left: 1px solid #008000;
}

nav .top {
    border-left: none;
}

.about img {
    margin: 0 10px;
}

ul li {
    display: inline-block;
    font-weight: lighter;
    vertical-align: middle;
}

#navToggle {
    display: none;
    position: absolute;
    right: 130px;
    top: 45px;
    width: 30px;
    height: 25px;
    cursor: pointer;
}

#navToggle div {
    position: relative;
}

#navToggle span {
    display: block;
    position: absolute;
    width: 100%;
    border-bottom: solid 3px #999;
    -webkit-transition: .35s ease-in-out;
    -moz-transition: .35s ease-in-out;
    transition: .35s ease-in-out;
}

#navToggle span:nth-child(1) {
    top: 0;
}

#navToggle span:nth-child(2) {
    top: 11px;
}

#navToggle span:nth-child(3) {
    top: 22px;
}

.link-sns {
    position: absolute;
    right: 3%;
    top: 40%;
}

.link-sns img {
    width: 35px;
    height: auto;
}

.column-container {
    width: 80%;
    height: auto;
    background: rgb(255,255,255);
    background: rgba(255,255,255,0.9);
    border-radius: 10px;
    text-align: center;
    margin: 0 auto;
    margin-top: 200px;
    margin-bottom: 150px;
    position: relative;
}

.column-txt {
    width: 100%;
}

.book-container {
    width: 100%;
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    -ms-flex-pack: center;
    justify-content: center;
}

.book-content {
    width: 65%;
}

h1 {
    width: 90%;
    color: #412111;
    font-family: "ヒラギノ角ゴ Pro W3", "Hiragino Kaku Gothic Pro", sans-serif, Verdana, "メイリオ", "Meiryo", "ＭＳ Ｐゴシック", "MS PGothic", Sans-Serif;
    font-size: 25px;
    line-height: 1.8;
    padding: 50px 0;
    display: inline-block;
    text-align: left;
}

.beethoven-image {
    width: 35%;
    margin-left: -30px;
    padding-top: 70px;
}

.beethoven-image img {
    width: 100%;
    max-width: 300px;
}

.beethoven {
    color: #4f81bd;
    font-size: 16px;
    padding: 20px 0 20px 10px;
}

.column-txt-a {
    width: 90%;
    color: #412111;
    font-size: 18px;
    line-height: 1.8;
    letter-spacing: 1px;
    display: inline-block;
    text-align: left;
    text-indent: 1em;
}

.column-txt-b {
    width: 90%;
    color: #412111;
    font-size: 18px;
    line-height: 1.8;
    letter-spacing: 1px;
    padding-bottom: 50px;
    display: inline-block;
    text-align: left;
    text-indent: 1em;
}

.uta-net {
    width: 90%;
    display: inline-block;
    text-align: center;
    padding-bottom: 50px;
    color: #412111;
    font-size: 18px;
    line-height: 1.8;
    letter-spacing: 1px;
}

.uta-net a {
    color: #412111;
    font-size: 18px;
    line-height: 1.8;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all .5s;
}

.uta-net a:hover {
    color: #008000;
}

#mail {
    width: 40%;
    padding-top: 20px;
    padding-bottom: 50px;
    margin: 0 auto;
}

#mail a img{
    width: 100%;
    max-width: 100%;
    height: auto;
    cursor: pointer;
}

.date-container {
    width: 95%;
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: end;
    -webkit-justify-content: flex-end;
    -ms-flex-pack: end;
    justify-content: flex-end;
    padding-bottom: 15px;
}

.date {
    color: #412111;
    font-size: 18px;
    letter-spacing: 1px;
    text-align: right;
    text-indent: 1em;
}

.name {
    color: #412111;
    font-size: 18px;
    letter-spacing: 1px;
    margin-left: 20px;
}

.co-ltd {
    width: 95%;
    font-size: 18px;
    color: #412111;
    text-align: right;
    padding-bottom: 50px;
}

.pages {
    width: 90%;
    padding-bottom: 100px;
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: justify;
    -webkit-justify-content: space-between;
    -ms-flex-pack: justify;
    justify-content: space-between;
    margin: 0 auto;
}

.prev-button a {
    color: #412111;
    font-size: 20px;
    letter-spacing: 1px;
    cursor: pointer;
}

.prev-button a:hover {
    color: #008000;
    transition: all.5s;
}

.back-button a {
    color: #412111;
    font-size: 20px;
    letter-spacing: 1px;
    cursor: pointer;
}

.back-button a:hover {
    color: #008000;
    transition: all.5s;
}

.next-button a:hover {
    color: #008000;
    transition: all.5s;
}

.next-button a {
    color: #412111;
    font-size: 20px;
    letter-spacing: 1px;
    cursor: pointer;
    display: inline-block;
}


@media screen and (max-width: 1300px) {
    #mail {
        width: 50%;
    }
}



@media screen and (max-width: 1080px)  {

header nav {
        position: absolute;
        top: -500px;
        background: #fff;
        width: 100%;
        -webkit-transition: .5s ease-in-out;
        -moz-transition: .5s ease-in-out;
        transition: .5s ease-in-out;
        text-align: center;
    }

    nav {
        margin-right: 0;
    }

    header ul {
        margin: 0;
    }

    ul {
        padding-inline-start: 0px;
    }

    header ul li {
        display: block;
        margin: 0;
        border-bottom: dotted 1px rgb(0,128,0);
        line-height: 3;
    }

    header ul li a {
        display: block;
    }

    header ul li::after {
        content:''
    }

    header ul li:last-child {
        border-bottom:none;
    }

    nav {
        right: 0;
    }

    nav li {
        border-left: none;
        width: 100%;
    }

    #navToggle {
        display: block;
    }

    .openNav #navToggle span:nth-child(1) {
        top: 11px;
        -webkit-transform: rotate(-45deg);
        -moz-transform: rotate(-45deg);
        transform: rotate(-45deg);
    }

    .openNav #navToggle span:nth-child(2),
    .openNav #navToggle span:nth-child(3) {
        top: 11px;
        -webkit-transform: rotate(45deg);
        -moz-transform: rotate(45deg);
        transform: rotate(45deg);
    }

    .openNav nav {
        -moz-transform: translateY(565px);
        -webkit-transform: translateY(565px);
        transform: translateY(565px);
    }

    h1 {
        padding-top: 60px;
    }

    .column-container {
        width: 90%;
    }

    .column-contents {
        display: block;
    }

    .column-txt {
        width: 100%;
    }  

    .column-txt-a,
    .column-txt-b,
    .uta-net,
    .uta-net a,
    .date,
    .letter {
        font-size: 16px;
    }

    .book-container {
        display: block;
    }

    .book-content {
        width: 100%;
    }

    .beethoven-image {
        width: 100%;
        margin: 0;
        padding-top: 0;
        margin-bottom: 50px;
    }

    .beethoven-image img {
        width: 50%;
    }


}



@media screen and (max-width: 768px) {

.icon-container {
    margin-top: 0;
}

#mail {
    width: 60%;
}

}


@media screen and (max-width: 559px) {

body::before {
    content:"";
    display:block;
    position:fixed;
    top:0;
    left:0;
    z-index:-1;
    width:100%;
    height:100vh;
    background-repeat:no-repeat;
    background-position:50% 100%;
    background-image:url(images/column-bg-responsive.png);
    background-size:cover;
}

.site-header {
    height: 80px;
}

.logo {
    margin-left: 10px;
    margin-top: 25px;
}

.logo {
    margin-left: 20px;
}

#navToggle {
    top: 33px;
    right: 110px;
}

.link-sns {
    top: 34%;
}

.column-container {
    margin-bottom: 80px;
    margin-top: 150px;
}

h1 {
    font-size: 20px;
}

#mail {
    width: 80%;
}

.prev-button a,
.back-button a,
.next-button a {
    font-size: 16px;
}

.date-container {
    display: block;
}

.name {
    margin: 10px 0;
    text-align: right;
}

.circle {
    -webkit-box-pack: end;
    -webkit-justify-content: flex-end;
    -ms-flex-pack: end;
    justify-content: flex-end;
}

}


@media screen and (max-width: 450px) {
    #mail {
        width: 93%;
    }
}


@media screen and (max-width: 320px) {

.logo {
    margin-left: 10px;
}

.logo img {
    width: 140px;
}

#navToggle {
    right: 80px;
}

.link-sns {
    right: 1%;
}

.circle {
    width: 100%;
}

.letter {
    font-size: 14px;
}

}