.study_box {
    width: 800px;
    height: 680px;
    overflow: hidden;
    padding: 0px 200px 0 200px;
    background: url('../../img/bbgg2.jpg') no-repeat center;
    background-size: 100% auto;
    margin: auto;
    position: relative;
}
.study_box_bg{
	overflow: hidden;
}
.tart_top{
	width: 660px;
    height: 120px;
    font-size: 38px;
    font-family: "KaiTi";
    color: #E81616;
    margin: 0px auto;
  	text-align: center;
  	overflow: hidden;
}
.tart_top_left1{
	width: 145px;
	height: 68px;
	float: left; 
	vertical-align: middle;
	margin-top: 30px;
}

.tart_top_leftA{
    width: 48px;
    height: 58px;
    line-height: 20px;
    padding: 20px 25px;
	float: left;
	background: url('../img/font_4-1bg.png') no-repeat center center;
	margin-left: 60px;
	margin-top: 18px;
	background-size: auto 100%;
	text-align: center;
	font-weight: 700;
}
.tart_top_leftA a{
	color: #E81616;
	font-size: 22px;
}
.left_biaoti{
    height: 225px;
    width: 40px;
    padding: 40px 10px;
    text-align: center;
    position: absolute;
    top: 110px;
    left: 190px;
    font-size: 28px;
    background: url(../img/video_left_bg.png) no-repeat;
    background-size: 100% 100%;
    color: #FFFFFF;
}

.video_box4-2{
    width: 660px;
    padding:20px 0 10px 0;
    margin: 0 auto;
    background: url(../img/video_bg4-1.png) no-repeat;
    background-size: 100% 100%;
}
.bottomDetail{
    overflow: hidden;
    margin: 10px auto;
    width: 660px;
}
.img_font{
    width: 100px;
    height: 100px;
    display: block;
    float: left;
    margin: 0 0 0 50px;
}
.fontImg{
    width: 100px;
    height: 100px;
    display: block;
    float: left;
    margin: 20px 0 0 30px;
}
.jieshi{
    width: 445px;
    max-height: 140px;
    float: left;
    margin-left: 40px;
    overflow: auto;
}
.jieshi_top{
    height: 30px;
    margin-top: 20px;
    font-size: 26px;
    line-height: 30px;
    text-align: center;
}
.jieshi_botm{
    background: rgba(0,0,0,0.2);
    border-radius: 18px;
    background-size: 100% 100%;
    padding: 20px 50px 10px 50px;
    overflow: hidden;
    height: 70px;
}
.jieshi_botm p{
    text-align: center;
    height: 30px;
    line-height: 30px;
    color: #E81616;
    font-size: 23px;
    margin: 0;
    padding: 0 8px;
    float: left;
}
.tom{
    width: 660px;
    margin: 10px auto;
}
.fanhui{
    width: 94px;
    height: 40px;
    line-height: 40px;
    display: block;
    background: url(../img/fh-bg.png) no-repeat center;
    background-size: auto 100%;
    font-size: 24px;
    color: #FFFFFF;
    text-align: center;
    float: right;
}