.sub-section-1 {
    background-color: #f1f5fa;
}
.sub-section-1 .content-container {
	padding: 0 24px 72px 24px;
}
.sub-section-1 .content-container .lecture {
    width: 100%;
    padding: 48px 72px;
}
.sub-section-1 .content-container .lecture:nth-child(2n+1) {
    background-color: #ffffff;
}
.sub-section-1 .content-container .lecture::after {
    content: '';
    display: block;
    clear: both;
}
.sub-section-1 .content-container .lecture>img {
    float: left;
    width: 100%;
    max-width: 336px;
}
.sub-section-1 .content-container .lecture>div {
    float: left;
    width: calc(100% - 336px);
    padding-left: 48px;
}
.sub-section-1 .content-container .lecture>div .name {
    display: inline-block;
    font-size: 20px;
    line-height: 48px;
    font-weight: 700;
    vertical-align: middle;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}
.sub-section-1 .content-container .lecture>div .career {
    display: inline-block;
    height: 24px;
    margin-left: 4px;
    border-left: 2px solid #333333;
    padding-left: 6px;
    font-size: 15px;
    line-height: 26px;
    font-weight: 700;
    vertical-align: middle;
}
.sub-section-1 .content-container .lecture>div .history {
    display: inline-block;
    position: relative;
    width: 100%;
    margin-bottom: 8px;
    padding-left: 18px;
    font-size: 15px;
    word-break: keep-all;
}
.sub-section-1 .content-container .lecture>div .history::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 5px;
    height: 2px;
    border-left: 4px solid #3d8fc1;
    border-right: 4px solid #2b6486;
}
.sub-section-1 .content-container .lecture>div>img {
    margin-top: 16px;
    max-width: 100%;
    max-height: 24px;
}
@media only screen and (max-width: 979px) {
    .sub-section-1 .content-container .lecture {
        width: 100%;
        max-width: 384px;
        margin: 0 auto;
        padding: 48px 24px;
    }
    .sub-section-1 .content-container .lecture>div {
        width: 100%;
        padding: 0 8px;
    }
}



.sub-section-2 {
    background-image: url(../lecture/img/section_2_bg.jpg);
    background-size: cover;
    background-position: center;
}
.sub-section-2 .title-container .section-title {
    color: #ffffff;
}
.sub-section-2 .title-container .divider {
    border-bottom-color: #ffffff;
}
.sub-section-2 .content-container {
    width: calc(980px - 48px);
    padding: 24px;
    background-color: rgba(255, 255, 255, 0.9);
    font-size: 0;
}
.sub-section-2 .content-container .class {
    display: inline-block;
    width: 25%;
    padding: 24px 0;
    text-align: center;
    font-size: 15px;
}
.sub-section-2 .content-container .class:not(:nth-child(4n)) {
    border-right: 1px solid #e6e7e9;
}
.sub-section-2 .content-container .class:nth-child(n+5) {
    border-top: 1px solid #e6e7e9;
}
.sub-section-2 .content-container .class .img {
    display: inline-block;
    position: relative;
    width: 96px;
    height: 96px;
}
.sub-section-2 .content-container .class .img img {
    position: absolute;
    top: 50%;
    left: 50%;
    max-width: 100%;
    max-height: 100%;
    transform: translate(-50%, -50%);
}
.sub-section-2 .content-container .class .text {
    margin-top: 12px;
}
.sub-section-2 .content-container .class .text span {
    display: block;
}
.sub-section-2 .content-container .class .text span:not(:first-child) {
    margin-top: 8px;
}
@media only screen and (max-width: 979px) {
    .sub-section-2 .content-container {
        width: calc(100% - 48px);
    }
    .sub-section-2 .content-container .class {
        width: 33.3333%;
    }
    .sub-section-2 .content-container .class:not(:nth-child(4n)) {
        border-right: none;
    }
    .sub-section-2 .content-container .class:not(:nth-child(3n)) {
        border-right: 1px solid #e6e7e9;
    }
    .sub-section-2 .content-container .class:nth-child(n+4) {
        border-top: 1px solid #e6e7e9;
    }
}
@media only screen and (max-width: 599px) {
	.sub-section-2 .content-container {
		padding: 12px;
	}
    .sub-section-2 .content-container .class {
        width: 50%;
    }
    .sub-section-2 .content-container .class:not(:nth-child(4n)) {
        border-right: none;
    }
    .sub-section-2 .content-container .class:not(:nth-child(3n)) {
        border-right: none;
    }
    .sub-section-2 .content-container .class:not(:nth-child(2n)) {
        border-right: 1px solid #e6e7e9;
    }
    .sub-section-2 .content-container .class:nth-child(n+3) {
        border-top: 1px solid #e6e7e9;
    }
}