#uku-img {
    background: url('/Public/img/app_icon/ukulele_tuner.png') no-repeat;
    background-position:50% 50%;
    background-size:cover; 
}
#erhu-img{
    background: url('/Public/img/app_icon/erhu_tuner.png') no-repeat;
    background-position:50% 50%;
    background-size:cover; 
}
#violin-img {
    background: url('/Public/img/app_icon/violin_tuner.png') no-repeat;
    background-position:50% 50%;
    background-size:cover; 
}
#pipa-img{
    background: url('/Public/img/app_icon/pipa_tuner.png') no-repeat;
    background-position:50% 50%;
    background-size:cover; 
}
#guitar-img {
    background: url('/Public/img/app_icon/guitar_tuner.png') no-repeat;
    background-position:50% 50%;
    background-size:cover; 
}

#erhu-notice-screen1-img {
    background: url('/Public/img/notice/erhu/erhu_notice_1.png') no-repeat;
    background-position:50% 50%;
    background-size:cover; 
}
#erhu-notice-screen2-img {
    background: url('/Public/img/notice/erhu/erhu_notice_2.png') no-repeat;
    background-position:50% 50%;
    background-size:cover; 
}
#erhu-notice-screen3-img {
    background: url('/Public/img/notice/erhu/erhu_notice_3.png') no-repeat;
    background-position:50% 50%;
    background-size:cover; 
}

*{ padding: 0; 
    margin: 0;
    font-size:16px; 
    font-family:"微软雅黑", Arial, "黑体",Verdana, Lucida Sans Unicode, Helvetica, sans-serif;
} 
#navbar-header { 
    min-width: 1200px; 
    height: 80px;
    background-color: #25242a;
} 
#nav-container {
    margin:0 auto;
    width:1200px;
} 
#logo-img {
    width: 163px;
    height: 70px;
    background: url('https://t-a.truestudio.tech/Public/img/website/truestudio.tech_logo.png') no-repeat;
    background-position:50% 50%;
    background-size:cover; 
}
.logo{
    float: left;
    padding-left: 5px;
    padding-top: 7px;
    width: 163px;
    height: 70px;
}
.top-nav{
    float:right;
    padding-right: 8px;
}
.top-nav ul li{
    display: inline-block;
    float: left;
    padding:0px 20px;
}
.top-nav ul li a{
    font-size: 18px;
    text-decoration: none;
    color: #808385;
    font-weight: 400;
    padding: 27px 0 17px;
    display:block;
}
a:link{color:#808385;}
a:visited{color:#808385;}
a:focus {color:#808385;}
.top-nav ul li a:hover,.top-nav ul li.active a{
    color: #c6c6c6;
}
.div-m{
    background-color: #ffffff;
    margin: 0px auto;
    min-height: 400px;
    min-width: 1200px; 
    padding-top: 75px;
}
.div-wrap{
    background-color: #ffffff;
    margin: 0px auto;
    min-width: 1200px;
    padding-top: 60px;
    padding-bottom: 60px;
}
.div-contact{
    margin: 15px auto 0;
}
#div-main{
    margin: 0 auto;
    position:relative;
}
#div-main h2{
    font-size: 21px;
    color: #25242a;
    font-family: Arial;
    margin: 0px auto 0px;
    line-height:45px;
}
#div-main h1{
    font-size: 26px;
    text-align:center;
    color: #25242a;
    font-family: Arial;
    margin: 0px auto 0px;
    line-height:65px;
}
#div-main p{
    color: #6f7274;
    margin: 0 auto;
    margin-top: 10px;
    font-family: Arial;
    line-height:29px;
}
#div-main p a{
    color: #4b8fef;
    text-decoration: none;
}
#div-main p a:hover{
    color: #5fa1ff;
}
body{
    background-color: #ededed;
}
#div-c{
    padding: 30px 0px; 
    text-align:center; 
    background: #ededed; 
    color:#787b7f; 
    font-size:12px; 
    border-top:1px solid #e9e9e9;
}

#div-c a{
    text-align:center; 
    color:#787b7f; 
    font-size:12px;
    line-height: 30px; 
}

#div-appmain{
    position: relative; 
    margin: 0 auto;
    position:relative;
}
.app-icon{
    width: 96px;
    height: 96px;
    margin: 0 auto;
}
.div-apps h2{
    font-size: 24px;
    color: #25242a;
    font-family: Arial;
    margin: 0px auto 0px;
    /*margin: 0px auto 39px;
    position:relative;
    top:28px ;*/
    line-height:45px;
}
#main-page-text{
    text-align:center; 
    color: #6f7274;
    margin: 0 auto;
    margin-top: 150px;
    font-family: Arial;
    line-height:29px;
    font-size: 18px;
}
.div-app-detail-text-container{
    float: left;
}

.app-screen-shot{
    float: right;
}
#ukulele-ss-img {
    background: url('/Public/img/screenshot/ukulele_tuner.png') no-repeat;
    background-position:50% 50%;
    background-size:cover; 
}
#erhu-ss-img {
    background: url('/Public/img/screenshot/erhu_tuner.png') no-repeat;
    background-position:50% 50%;
    background-size:cover; 
}
#violin-ss-img {
    background: url('/Public/img/screenshot/violin_tuner.png') no-repeat;
    background-position:50% 50%;
    background-size:cover; 
}
#pipa-ss-img {
    background: url('/Public/img/screenshot/pipa_tuner.png') no-repeat;
    background-position:50% 50%;
    background-size:cover; 
}
#guitar-ss-img {
    background: url('/Public/img/screenshot/guitar_tuner.png') no-repeat;
    background-position:50% 50%;
    background-size:cover; 
}
.div-app-m{
    background-color: #ffffff;
    margin: 0px auto;
    min-width: 1200px; 
    padding-top: 75px;
}
.get-it-on-google-play{
    background: url('/Public/img/badge/google-play.png') no-repeat;
    background-position:50% 50%;
    background-size:cover; 
    width: 210px;
    height: 60px;
}
.download-on-the-app-store{
    background: url('/Public/img/badge/app-store.png') no-repeat;
    background-position:50% 50%;
    background-size:cover; 
    width: 180px;
    height: 60px;
}
.download-on-the-yyb{
    background: url('/Public/img/badge/yyb.png') no-repeat;
    background-position:50% 50%;
    background-size:cover; 
    width: 157px;
    height: 60px;    
}
.google-play-button{
    float: left;
}
.app-store-button{
    float: left;
    margin-left: 20px;
}
.yyb-button{
    float: left;
    margin-left: 20px;    
}
.app-detail-title{
    font-size: 26px;
    height: 60px;
    color: #25242a;
}
.clear{
    clear:both;
}

.notice-screen-image{
    width: 320px;
    height: 569px;
}


/* main page*/

.base-figure{
    width: 100%;
    text-align: center;
}

.base-figure img{
    width: 100%;
    max-width: 1439px;
    vertical-align: middle;
}

.banner{
    background: #33bbb8;
}

.page-2{
    background: white;
}

.about-container{
    height: 640px;
    display: flex;
    flex-direction: row-reverse;
    align-items: center;
    margin: 0 auto;
    position:relative;
}

.about-container-square{
    margin-left: 30px;
    margin-right: 30px;
    background: white;
    width: 658px;
    box-sizing:border-box;
    padding: 55px;
    padding-bottom: 65px;
}

.about-container-square h2{
    font-size: 21px;
    color: #25242a;
    font-family: Arial;
    margin: 0px auto 0px;
    line-height:45px;
}
.about-container-square h1{
    font-size: 26px;
    text-align:center;
    color: #25242a;
    font-family: Arial;
    margin: 0px auto 0px;
    line-height:65px;
}
.about-container-square p{
    color: #6f7274;
    margin: 0 auto;
    margin-top: 10px;
    font-family: Arial;
    line-height:29px;
}
.about-container-square a{
    color: #4b8fef;
    text-decoration: none;
}
.about-container-square a:hover{
    color: #5fa1ff;
}

#about-background-mobile{
    display: none;
}

#about-background{
    height: 100%;
    background-image: url(https://t-a.truestudio.tech/Public/img/website/about_background.jpeg);
    background-position: center 0px;
    background-size: cover;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

@media screen and (max-width: 11800px){

    #div-main{
        width: 1050px; 
    }
    body{
        overflow: scroll;
    }
    #div-c{
        min-width: 1200px; 
    }

    .div-app-detail-container{
        width: 1050px;
        margin-bottom: 60px;
    }
    .app-screen-shot{
        width: 320px;
        height: 632px;
    }
    .div-app-detail-text-container{
        width: 660px;
    }
    .div-app-m{
        padding-bottom: 150px;
    }
    .div-app-store-badge{
        width: 415px;
        margin-left: 317px;
    }
    .div-app-store-badge-china-mainland{
        width: 600px;
        margin-left: 225px; 
    }

    #div-appmain{
        width: 1050px; 
    }
    
    .div-apps h2{
        font-size: 24px;
        color: #25242a;
        font-family: Arial;
        margin: 0px auto 0px;
        /*margin: 0px auto 39px;
        position:relative;
        top:28px ;*/
        line-height:45px;
    }
    .div-apps ul{
        margin: 30px auto 0;
    }
    .div-apps ul li{
        display: inline-block;
        /*float: left;*/
        padding:0px 9px;
        width: 150px;
        margin: 0 auto;
    }
    .div-apps ul li a {
        color: #808385;
        text-decoration: none;
    }
    .div-apps ul li a:hover{
        color: #a0a0a0;
    }
/*    .div-apps ul li a div {
        width: 166px;
        margin: 0 auto;
    }*/
    .div-apps ul li a h3{
        font-size: 19px;
        margin: 18px auto 0;
        text-decoration: none;
        text-align:center; 
        font-weight: 400;
    }

    .about-container{
        width: 1180px; 
    }

}

@media screen and (max-width: 1200px){

    #navbar-header { 
        min-width: 960px; 
    } 

    #nav-container {
        width:960px;
    } 
    .div-m{
        min-width: 960px; 
    }
    .div-wrap{
        min-width: 960px;
    }
    #div-main{
        width: 860px; 
    }
    #div-c{
        min-width: 960px; 
    }
    #div-appmain{
        width: 860px; 
    }

    .div-app-detail-container{
        width: 860px;
    }
    .app-screen-shot{
        width: 320px;
        height: 632px;
    }
    .div-app-detail-text-container{
        width: 500px;
    }
    .div-app-m{
        min-width: 960px; 
    }
    .div-app-store-badge{
        width: 415px;
        margin-left: 222px; 
    }
    .div-app-store-badge-china-mainland{
        width: 600px;
        margin-left: 130px; 
    }
    .about-container{
        width: 960px; 
    }
}

@media screen and (max-width: 960px){

    *{ 
        font-family:"微软雅黑",Arial;
    } 
    #navbar-header { 
        min-width: 320px; 
        height: 60px;
    } 
    #nav-container {
        width:100%;
    } 
    #logo-img {
        width: 123px;
        height: 53px;
    }
    .logo{
        float: left;
        padding-left: 5px;
        padding-top: 5px;
        width: 123px;
        height: 53px;
    }
    .top-nav{
        padding-right: 3px;
    }
    .top-nav ul li{
        padding:16px 6px 0;
    }
    .top-nav ul li a{
        font-size: 19px;
        padding: 2px 0 2px;
    }
    .top-nav ul li.active a{
        color: #c6c6c6;
    }
    .div-m{
        min-height: 430px;
        padding-top: 36px;
        width: 100%;
        min-width: 320px; 
    }
    .div-wrap{
        min-width: 320px;
    }
    .div-contact{
        margin: 17px auto 0;
    }
    #div-main{
        width: 90%;
    }

    #div-main div h2{
        font-size: 20px;
    }
    #div-c{
        min-width: 320px; 
    }

    .div-app-m{
        padding-top: 36px;
        width: 100%;
        min-width: 320px; 
    }

    #div-appmain{
        width: 90%
    }

    .div-app-detail-container{
        width: 100%;
    }
    .app-screen-shot{
        width: 320px;
        height: 632px;
        display: none;
    }
    .div-app-detail-text-container{
        width: 100%;
        float: none;
    }
    .div-app-store-badge{
        width: 415px;
        margin-left: calc(50% - 207px); 
    }
    .div-app-store-badge-china-mainland{
        width: 600px;
        margin-left: calc(50% - 300px); 
    }


    .app-icon{
        width: 56px;
        height: 56px;
    }
    .div-apps h2{
        font-size: 21px;
    }

    .div-apps ul li{
        display: inline-block;
        padding:0px 9px;
        float: left;
        height: 156px;
        width: 27%;
        margin: 0 auto;
    }
    .div-apps ul li a {
        color: #808385;
        text-decoration: none;
    }
    .div-apps ul li a:hover{
        color: #a0a0a0;
    }
/*    .div-apps ul li a div {
        width: 72px;
        height: 128px;
        margin: 0 auto;
    }*/
    .div-apps ul li a h3{
        font-size: 13px;
        margin: 17px auto;
        text-decoration: none;
        text-align:center; 
        font-weight: 400;
    }
    #app-title-icon-blank{
        height: 30px;
    }
    #main-page-text{
        margin-top: 200px;
    }
    .buy-link-container{
        border-radius:6px;
        border: solid 1px #c5c5c5;
        width: 100%;
        height: 100px;
        margin-top: 25px;
        background-color: #ffffff;
    }
    .match-p-div{
        width: 100%;
        height: 100%;
    }
    .item-img {
        float: left;
        width: 80px;
        height: 80px;
        margin-top: 10px;
        margin-left: 17px;
        background-position:50% 50%;
        background-size:cover; 
    }
    .item-title-container{
        margin-left: 113px;
        font-size: 15px;
        color: #25242a;
        padding-top: 15px;
    }
    .no-decoration{
        text-decoration: none;    
    }
    .audition-intro{
        float: left;
        color: #6f7274;
        font-family: Arial;
        line-height: 29px;
        font-size: 16px;
    }
    .audition-intro-addition{
        color: #b4b4b4;
        font-family: Arial;
        line-height: 29px;
        font-size: 14px;
    }
    .audition-title{
        font-size: 20px;
        color: #25242a;
        font-family: Arial;
        margin: 0px auto 0px;
        line-height: 45px;
    }
    .m-div-main{
        background-color: #ffffff;
        margin: 0px auto;
        min-height: 430px;
        padding-top: 36px;
        padding-bottom: 36px;
    }
    .m-div-margin-left-right{
        margin: 0 25px;
        position: relative;
    }
    .audition-intro-container{
        margin-bottom: 7px;
        margin-top: 15px;
    }
    .about-container{
        width: 90%; 
    }

}

@media screen and (max-width: 680px){
    .google-play-button{
        float: none;
    }
    .app-store-button{
        float: none;
    }
    .yyb-button{
        float: none;   
    }
    .div-app-m {
        padding-bottom: 50px;
    }
    .div-app-detail-container{
    }
    .div-app-store-badge{
        width: 100%;
        margin-left: 0px; 
    }
    .div-app-store-badge-china-mainland{
        width: 100%;
        margin-left: 0px; 
    }

    /* main page*/

    .base-figure{
        /*display: inline-block;*/
        float: none;
        width: 100%;
        overflow: hidden;
    }

    .base-figure img{
        width: calc(100% + 100px);
        max-width: calc(100% + 100px);
        margin-left: -50px;
    }

    #about-background{
        display: none;
    }
    #about-background-mobile{
        display: inline-block;
    }

    .about-container-square-mobile{
        background: white;
        width: 100%;
        box-sizing:border-box;
        padding: 55px;
        padding-bottom: 65px;
        margin-top: 5px;
    }

    .about-container-square-mobile h2{
        font-size: 21px;
        color: #25242a;
        font-family: Arial;
        margin: 0px auto 0px;
        line-height:45px;
    }
    .about-container-square-mobile p{
        color: #6f7274;
        margin: 0 auto;
        margin-top: 10px;
        font-family: Arial;
        line-height:29px;
    }
    .about-container-square-mobile a{
        color: #4b8fef;
        text-decoration: none;
    }
    .about-container-square-mobile a:hover{
        color: #5fa1ff;
    }

}