.clearfix:after {
    content: "";
    display: block;
    height: 0;
    clear: both;
    visibility: hidden;
}


.chapter-top {
    background: #fff;
    margin-top: 20px;
    box-shadow: 0px 0px 5px #d6d6d6;
}

.chapter-top .content {
    padding: 30px 0px;
}
.chapter-top .content  h3{

    text-align: center;

    font-size: 22px;

    letter-spacing: 1px;

    font-weight: normal;
}
.chapter-top .content p{

    text-align: center;

    padding-top: 10px;
}
.chapter-answer {
    margin-top: 20px;
    position: relative;
}
.chapter-answer .subject__box {
    width: 920px;
    background: #fff;
    box-shadow: 0px 0px 5px #d6d6d6;
    float: left;
}

.chapter-answer .subject__box .content {
    padding: 20px;
}
.chapter-answer .subject__box h3 {
    padding-bottom: 15px;
    font-weight: normal;
/*display: box;*/
    /*display: -webkit-box;*/
    /*display: -moz-box;*/
    /*!* -webkit-box-pack: center; *!*/
    /*-moz-box-pack: center;*/
    /*-webkit-box-align: center;*/
    /*-moz-box-align: center;*/
}
.chapter-answer .subject__box h3.stem .num {
    float: left;
    padding-right: 5px;
}
.chapter-answer .subject__box h3.stem .stemTitle{
}
.chapter-answer .subject__box h3.stem .stemTitle.cen{
    /*display: box;*/
    /*display: -webkit-box;*/
    /*display: -moz-box;*/
    /*!* -webkit-box-pack: center; *!*/
    /*-moz-box-pack: center;*/
    /*-webkit-box-align: center;*/
    /*-moz-box-align: center;*/
    /*-webkit-box-flex: 1;*/
}
.chapter-answer .subject__box .content .singleChoice {
    padding-left: 30px;
}
.chapter-answer .subject__box .content .singleChoice li {
    margin-bottom: 15px;
    cursor: pointer;
    display: grid;
    grid-template-columns: auto 1fr;
/*display: box;*/
    /*display: -webkit-box;*/
    /*display: -moz-box;*/
    /*!* -webkit-box-pack: center; *!*/
    /*-moz-box-pack: center;*/
    /*-webkit-box-align: center;*/
    /*-moz-box-align: center;*/
}
.layui-layer-btn .layui-layer-btn0{
    background-color: #ed6b6e!important;
    background-image: linear-gradient(to right, #ed6b6e, #f3876c)!important;
    border-color: #ed6b6e!important;
}
.chapter-answer .subject__box .content .singleChoice li img {
    float: left;
    margin-top: 1px;
}
.chapter-answer .subject__box .content .singleChoice li .op-content {
    float: left;
    margin-left: 10px;
    display: grid;
    grid-template-columns: auto 1fr;
    /*-moz-user-select: none;*/
    /*-webkit-user-select: none;*/
    /*-ms-user-select: none;*/
    /*user-select: none;*/
/*display: box;*/
    /*display: -webkit-box;*/
    /*display: -moz-box;*/

}
.chapter-answer .subject__box .content .singleChoice li .op-content span{
    float: left;
}
.chapter-answer .answerSheet {
    background: #fff;
    width: 260px;
    box-shadow: 0px 0px 5px #d6d6d6;
    float: right;
    position: absolute;
    right: 0;
    top: 0;
}
.chapter-answer .answerSheet .content {
    padding: 15px;
    margin: auto;
    max-height: 540px;
    /* overflow-y: auto; */
position: relative;}
.chapter-answer .answerSheet h3 {
    background: url(../images/pic_1.png) no-repeat left 1px;
    padding-left: 14px;
    font-size: 16px;
    float: left;
}
.chapter-answer .answerSheet .item p {
    padding: 12px 0px;
}
.chapter-answer .answerSheet .item ol li {
    float: left;
    width: 28px;
    height: 28px;
    text-align: center;
    line-height: 28px;
    border: 1px solid #dcdee2;
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    user-select: none;
    cursor: pointer;
    margin: 0px 4px;
    margin-bottom: 10px;
    border-radius: 4px;
}
.chapter-answer .subject__box .content .testList{
    margin-bottom: 31px;
}

.chapter-answer .subject__box .textarea {
    display: block;
    width: 848px;
    height: 180px;
    outline: none;
    padding: 15px;
    font-size: 14px;
    letter-spacing: 2px;
    resize: none;
    margin-bottom: 15px;
    border: 1px solid #dbdbdb;
}
.chapter-answer .answerSheet .content .timer{
    border-bottom: 1px solid #e8eaec;
    padding-bottom: 10px;
position: absolute;top: 15px;left: 15px;right: 15px;background: #fff;}
.chapter-answer .answerSheet .content #timer{
    background: url("../images/pic_8.png") no-repeat left center;
    padding-left: 25px;
    margin-top: 2px;
display: none;}

.chapter-answer .answerSheet #timer{

    float: right;
}
.chapter-answer .answerSheet .content .btn_box{

    display: block;

    padding-top: 15px;
background: #fff;margin-left: -15px;margin-right: -15px;padding-bottom: 15px;}
.chapter-answer .answerSheet .content .btn_box button{

    display: block;

    border: none;

    width: 200px;

    height: 40px;

    border-radius: 4px;

    cursor: pointer;

    margin: auto;
}
.chapter-answer .answerSheet .content .btn_box button.btn_1{

    color: #ec6c6e;

    background: #fff;

    border: 1px solid #ec6c6e;
}
.chapter-answer .answerSheet .content .btn_box button.btn_2{

    background: #ec6c6e;

    color: #fff;

    border: 1px solid #ec6c6e;

    margin-top: 15px;
}
.chapter-answer .answerSheet .content .btn_box button:hover{
    opacity: 0.85;
    -moz-transition: ease-out 0.3s;
    -o-transition: ease-out 0.3s;
    -webkit-transition: ease-out 0.3s;
    transition: ease-out 0.3s;
}
.chapter-answer .answerSheet .item ol li.complete {
    background: #b1b6c0;
    color: #fff;
}
#answerSheetBox{
    max-height: 390px;
    overflow-y: auto;
    padding-top: 30px;
    }
.bigTitle{
    
padding-bottom: 10px;
    display: block;
    font-size: 18px;
    font-weight: bold;}
@media screen and (max-width: 1500px) {
    .chapter-answer .answerSheet{
        width: 260px;
        /* height: 490px; */
        overflow-y: auto;
    }
    .chapter-answer .answerSheet .content{
        width: 210px;
    }
    #answerSheetBox{
        max-height: 355px;
        overflow-y: auto;
    }
}

.functionCard{
    display: none;
}
@media screen and (max-width: 500px) {

    html,body{font-size:14px;}
    .chapter-top{

        margin-top: 0.25rem;box-shadow: none;}
    .chapter-answer{
        
    margin-top: 0.25rem;}
    .chapter-top .content{
        
    padding: 0.3rem 0;box-shadow: 0px 0px 2px #d6d6d6;margin: 0 0.25rem;}
    .chapter-top .content h3{
        
    font-size: 0.32rem;letter-spacing: 0;}
    .chapter-top .content p{
        
    font-size: 0.26rem;padding-top: 0.15rem;}
    .chapter-answer .answerSheet{
        
    width: 100%;height: auto;float: none;margin: auto;right: 0;position: fixed;bottom: -100rem;top: auto;}
    .chapter-answer .subject__box{
        
    float: none;width: auto;margin: 0 0.25rem;}
    .chapter-answer .subject__box .content{
        
    padding: 0.25rem;}
    .bigTitle{
        
    font-size: 0.28rem;padding-bottom: 0.1rem;}
    .chapter-answer .subject__box h3{
        
    padding-bottom: 0.15rem;}
    .chapter-answer .subject__box h3.stem .stemTitle p{
        
    padding-bottom: 0.15rem;font-size: 0.26rem;}
    .chapter-answer .subject__box h3.stem .stemTitle img{
        
    max-width: 100%;height: auto;}
    .chapter-answer .subject__box .content .singleChoice li .op-content{
        
    font-size: 0.26rem;}
    .chapter-answer .subject__box .textarea{
    width: 5.9rem;height: 2rem;font-size: 0.26rem;}
    .chapter-answer .answerSheet .content{
        
    width: auto;max-height: inherit;}
    .chapter-answer .answerSheet h3{
        
    }
    #answerSheetBox{

    max-height: 5rem;padding-top: 0.8rem;}
    .chapter-answer .answerSheet .item p{

    font-size: 0.26rem;padding: 0.15rem 0;}
    .chapter-answer .answerSheet .item ol li{

    width: 0.45rem;height: 0.45rem;line-height: 0.45rem;margin: 0 0.05rem;margin-bottom: 0.15rem;}
    .chapter-answer .answerSheet .content .btn_box{

    margin: 0;padding: 0;}
    .chapter-answer .answerSheet .content .btn_box button.btn_2{

    margin-top: 0.15rem;width: 5rem;height: auto;font-size: 0.26rem;line-height: 0.7rem;display: none;}
    .chapter-answer .answerSheet .content .timer{
        
    }
    .chapter-answer .subject__box h3{
        font-size: 0.26rem;
    }
    .functionCard{
        display: block;
        position: fixed;z-index: 50;background: #fff;left: 0;right: 0;bottom: 0;}
    .functionCard .box{
        display: grid;
        grid-template-columns: 1fr 1fr;
        
    }
    .functionCard .box p{

    text-align: center;line-height: 0.8rem;font-size: 0.26rem;}
    .functionCard .box p.btn_1{

    background: #ec6c6e;color: #fff;}
    .functionCard .box p.btn_2{

    background: #2caf2b;color: #fff;}
    .footer{
        
    margin-bottom: 0.8rem;}
}























































