*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

a{
    text-decoration: none;
}

li{
    /* list-style: none; */
}

ul, ol {
    margin: 0;
    /* padding: 0 0 0 2.5em;  24px/em */
    padding: 0 0 0 60px;
}

i, em {
    font-style: italic;
}

/* app */
.app{
    /* width: 1550px; */
    width: 100%;
    margin: auto;
    display: flex;
}

/* 左 */
.appleft{
    width: 40%;
    background-color: #FFFFFF;
    overflow-y: auto;
    overflow-x: hidden;
    margin-left: 0 ;
    margin-right: auto ;
    /* height: 100vh;
    overflow: scroll; */
    overflow: hidden
}

.leftbox{
    max-width: 100%;
    font-weight: 400;
    color: rgba(0, 0, 0, 0.85);
    font-family: "Helvetica Neue", Helvetica, sans-serif, "Helvetica Roman", Icons;
    font-style: normal;
    /* font-size: 2.2rem; 120px/11rem  27.3*/
    font-size: 23px;
    line-height: 1.3;
    padding: 25px /*!main_margin*/;
    /* padding-top: 2.5rem !main_margin; */
    box-sizing: border-box;
    z-index: 99;
}
.leftbox a{
    color: #000000D9;
}

sup {
    top: -0.4em;
}

[grid-gutter="2"] {
    margin: -1rem;
}

[grid-pad="1"] {
    padding: 0.5rem;
}
[grid-row] {
    align-items: flex-start;
    box-sizing: border-box;
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
}
[grid-col=x11] {
    width: 50%;
}

.leftimg1{
    width: 25px;
}
.leftimg2{
    width: 30px;
}


/* 右 */
.appright{
    width: 60%;
    /* background-color: skyblue; */
    position: relative;
    overflow: visible;
}

.rightbox{
    text-align: right;
    background-color: #FFFFFF;
    margin-left: auto;
    margin-right: 0;
    /* z-index: 2; */
    position: relative;
}

/* 右上角 标题 */
.righttitle{
    position: absolute;
    top: 0px;
    left: 0px;
    max-width: 100%;
    width: 100%;
    color: rgba(0, 0, 0, 0.85);
    font-family: "Helvetica Neue", Helvetica, sans-serif, "Helvetica Roman", Icons;
    line-height: 1.3;
    padding: 25px 50px;
    box-sizing: border-box;
}

.righttitle h1{
    font-family: "Helvetica Neue", Helvetica, sans-serif, "Helvetica Roman", Icons;
    font-style: normal;
    font-weight: 400;
    padding: 0;
    margin: 0;
    font-size: 24px;
    line-height: 1.3;
    color: rgba(0, 0, 0, 0.85);
}
.righttitle a{
    font-size: 24px;
    color: #000000D9;
    font-weight: 400;
}

/* 转img */
@keyframes rotate {
    from{
        transform: rotate(0);
    }
    to{
        transform: rotate(360deg);
    }
}
.gifimg{
    position: absolute;
    top: 0px;
    left: -120px;
    animation: rotate 7s linear infinite;;
}
.gifimg img{
    width: 180px;
}

/* 右侧page1 img */
.imgbox1{
    width: 100%;
}
.imgbox1 a img{
    width: 100%;
    border: 0;
    padding: 0;
}

/* page2 info */
.infotextbox{
    line-height: 1.3;
    padding: 25px;
    font-size: 1.6rem;
    font-weight: 400;
    color: rgba(0, 0, 0, 0.85);
    font-family: "Helvetica Neue", Helvetica, sans-serif, "Helvetica Roman", Icons;
    font-style: normal;
}

.infotext{

}

.infotext h2{
    font-family: Wremena, Icons;
    font-style: normal;
    font-weight: 200;
    padding: 0;
    margin: 0;
    color: rgba(0, 0, 0, 0.85);
    font-size: 50px;
    line-height: 0.9;
}

.infotext i{
    font-style: italic;
}
.infotext,.infotext i{
    text-align: left;
    font-size: 16px;
    font-weight: 400;
    color: rgba(0, 0, 0, 0.85);
    font-family: "Helvetica Neue", Helvetica, sans-serif, "Helvetica Roman", Icons;
    line-height: 1.3;
}

/* page3 Edition 1 */
.page3topimg{
 text-align: left;
}
.page3topimg img{
    width: 400px;
    margin: 20px;
}

.page3imgbox{
    padding: 25px;
    width: 100%;
}

.page3imgitem{
    width:100%;
    display: flex;
}

.page3imgitem a{
    /* width: 33%; */
    margin-right: 10px;
    margin-bottom: 10px;
}

.page3imgitem a img{
    width: 100%;
    border: 0;
    padding: 0;
}

.page3img1 a img{
    height: 385px;
    margin-bottom: -4px;
    overflow: hidden;
}

.page3img2 a img{
    height: 365px;
    margin-bottom: -4px;
    overflow: hidden;
}

.page3img3 a img{
    height: 330px;
    margin-bottom: -4px;
    overflow: hidden;
}

.page3img4 a img{
    height: 230px;
    margin-bottom: -4px;
    overflow: hidden;
}

.page3img5 a img{
    height: 285px;
    margin-bottom: -4px;
    overflow: hidden;
}

.page3img6 a img{
    height: 295px;
    margin-bottom: -4px;
    overflow: hidden;
}

.page3img7 a img{
    height: 430px;
    margin-bottom: -4px;
    overflow: hidden;
}

.rightreturn{
    max-width: 100%;
    width: 100%;
    color: rgba(0, 0, 0, 0.85);
    font-family: "Helvetica Neue", Helvetica, sans-serif, "Helvetica Roman", Icons;
    line-height: 1.3;
    padding: 25px;
    box-sizing: border-box;
    text-align: left;
}

.rightreturn h1{
    font-family: "Helvetica Neue", Helvetica, sans-serif, "Helvetica Roman", Icons;
    font-style: normal;
    font-weight: 400;
    padding: 0;
    margin: 0;
    font-size: 24px;
    line-height: 1.3;
    color: rgba(0, 0, 0, 0.85);
}
.rightreturn a{
    font-size: 24px;
    color: #000000D9;
    font-weight: 400;
}

.returnimg{
    width: 30px;
    margin-bottom: -4px;
    margin-left: -5px;
}

/* page4 1-1 Ursula K Le Guin */
.righttitle2{
    position: absolute;
    top: 0px;
    left: 0px;
    max-width: 100%;
    width: 100%;
    color: rgba(0, 0, 0, 0.85);
    font-family: "Helvetica Neue", Helvetica, sans-serif, "Helvetica Roman", Icons;
    line-height: 1.3;
    padding: 25px;
    box-sizing: border-box;
    text-align: left;
}

.righttitle2 h1{
    font-family: "Helvetica Neue", Helvetica, sans-serif, "Helvetica Roman", Icons;
    font-style: normal;
    font-weight: 400;
    padding: 0;
    margin: 0;
    font-size: 24px;
    line-height: 1.3;
    color: rgba(0, 0, 0, 0.85);
}
.righttitle2 a{
    font-size: 24px;
    color: #000000D9;
    font-weight: 400;
}

.page4imgbox{
    padding: 25px;
    width: 100%;
    padding-top: 125px;
    padding-bottom: 0;
}

.page4imgitem{
    width:100%;
    display: flex;
}

.page4imgitem a{
    /* width: 33%; */
    margin-right: 10px;
    margin-bottom: 10px;
}

.page4imgitem a img{
    width: 100%;
    border: 0;
    padding: 0;
}

.page4img1 a img{
    height: 640px;
    margin-bottom: -4px;
    overflow: hidden;
}

.page4text{
    text-align: left;
    padding: 20px 25px;
    color: rgba(0, 0, 0, 0.85);
    font-size: 16px;
}
.page4text small{
    font-size: 12px;
}

.page4img2 a img{
    height: 405px;
    margin-bottom: -4px;
    overflow: hidden;
}

.page4img2 span{
    font-size: 10px;
    margin-right: 249px;
    color: #000000D9;
}

.page4img3{
    width: 100%;
    padding-top: 40px;
    padding-right: 35px;
}

.page4img3 a img{
    width: 100%;
    margin-bottom: -4px;
    overflow: hidden;
}

.activedisplay{
    display: none;
}
.activedisplay2{
    display: block;
}

.fixedbox1{
    position: fixed;
    top: 0px;
    left: 0px;
    border: none;
}

.leftbox{
    height: 100vh;
    overflow: scroll;
    /* overflow-y: hidden; */
    overflow-x: hidden;
    width: 41.5%;
    border: none;
    background-color: #FFFFFF;
}