.section-bg {
    position: relative;
    background-size: 100% 100%;
}
/* .section-bg */

.section-container {
    /* max-width: 90rem; */
    max-width: 1200px;
    width: 80%;
    height: 100%;
    margin-left: auto;
    margin-right: auto;
    display: flex;
    flex-direction: column;
    position: relative;
}
@media (min-width: 2000px) {
    .section-container {
        /* max-width: 1600px; */
    }
}
.section-comm {
    padding: 80px 0;
    box-sizing: border-box;
}
.section-bg {
    position: relative;
    background-size: 100% 100%;
    background-repeat: no-repeat;
}
.section-content {
    flex: 1;
    z-index: 1;
}
.bg-img {
    background-image: url(../images/bg.png);
    background-size: 100% 100%;
    background-repeat: no-repeat;
}

/* 标题样式 */
.section-head {
    margin: auto;
    text-align: center;
    margin-bottom: 30px;
    z-index: 1;
}
.section-head-title {
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 3.2rem;
    font-family: MicrosoftYaHeiLight;
    font-weight: bold;
    /* color:rgba(51,51,51,1); */
    margin-bottom: 5px;
}
.section-head-title img {
    margin: 0 40px;
    height: 50%;
}
.section-head-min-title {
    font-size: 1.8rem;
    font-family: Microsoft YaHei;
    font-weight: 300;
    /* letter-spacing: 3px; */
    margin-top: 15px;
}
/* footer */
.footer {
    padding: 50px 0;
}
.top {
    display: flex;
    justify-content: space-around;
    border-bottom: 1px solid rgba(220, 220, 220, 1);
}
.top .item {
    width: 28%;
    padding: 2%;
}
.top .item .title {
    font-size: 1.8rem;
    font-weight: bold;
    text-align: center;
    color: #333;
    margin-bottom: 30px;
}
.top .item .desc {
    font-size: 14px;
    font-family: MicrosoftYaHeiLight;
    font-weight: 400;
    color: rgba(146, 146, 146, 1);
    line-height: 39px;
    text-align: center;
}
.top .item img {
    width: 173px;
    box-shadow: 0 0 10px #dcdcdc;
}
.bottom {
    width: 50%;
    margin-left: 25%;
    padding-top: 50px;
    font-size: 1.4rem;
    font-family: MicrosoftYaHeiLight;
    color: rgba(146, 146, 146, 1);
    line-height: 58px;
}

.bottom a {
    color: #929292;
    text-decoration: none;
}
.bottom a:hover {
    color: #007bff;
}

.bottom .bottom-item {
    display: flex;
    justify-content: space-around;
}

.sticky {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 1);
    box-shadow: -1px 1px 13px 0px rgba(0, 0, 0, 0.1);
    border-radius: 10px;
    position: fixed;
    bottom: 50px;
    right: 40px;
    text-align: center;
    line-height: 50px;
    cursor: pointer;
}