.about-container {
    padding-top: 50px;
}
.about-container .header {
    width: 100%;
    height: 50px;
    line-height: 50px;
    background: #fff;
    position: fixed;
    left: 50%;
    top: 0;
    z-index: 99;
    transform: translateX(-50%);
    border-bottom: solid 0.5px #D7DADE;
}
.about-container .header .header-icon {
    width: 50px;
    height: 50px;
    padding: 15px;
    position: absolute;
    left: 0;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.about-container .header .header-icon i {
    color: #666;
    font-size: 20px;
}
.about-container .header .header-text {
    font-size: 16px;
    text-align: center;
}
.about-container .rich-content {
    width: 100%;
    overflow-x: hidden;
}