.content{
	margin-top: 10px;
}
.content .img1{
    background-image: url(../img/teaching/chapter1.png);
    width: 350px;
	height: 54px;
}
.content .img2{
    background-image: url(../img/teaching/chapter2.png);
    width: 350px;
	height: 54px;
	margin-top: 15px;
}
.content .img3{
    background-image: url(../img/teaching/chapter3.png);
    width: 350px;
	height: 54px;
	margin-top: 15px;
}
.content .img4{
    background-image: url(../img/teaching/chapter4.png);
    width: 350px;
	height: 54px;
	margin-top: 15px;
}
.content .img5{
    background-image: url(../img/teaching/chapter5.png);
    width: 350px;
	height: 54px;
	margin-top: 15px;
}
.content .img6{
    background-image: url(../img/teaching/chapter6.png);
    width: 350px;
    height: 54px;
    margin-top: 15px;
}

.s{
    font-size: 20px;
    font-weight: bold;
    margin-left: 150px;
    line-height: 54px;
}

.content .left{
    float: left;
    width: 350px;
}
.content .right{
	height: 100%;
	margin-left: 375px;
}