.main {
    background-color: rgb(232, 234, 236);
    margin: 0 auto;
    max-width: 1200px;
    padding-top: 0px;
    padding-right: 0px;
    display: inline;
}

.main_content {
    position: relative;
    padding: 30px 0;
    background-color: rgb(245 245 245);
}

.foot_nav {
    margin-top: 0px;
}


.about_title {
    position: relative;
    text-align: center;
    font-size: 36px;
    opacity: 0;
    animation: about_title 1s forwards;
}

@keyframes about_title {
    from {
        opacity: 0;
        top: 20px;
    }

    to {
        opacity: 1;
        top: 0px;
    }
}

.about_img {
    display: flex;
    width: 460px;
    height: 285px;
}

.about_img img {
    margin-top: 5px;
}

.about_us {
    display: flex;
    justify-content: center;
    margin-top: 20px;
    padding-bottom: 200px;
    opacity: 0;
    animation: about_us 1s forwards;
    position: relative;
    top: 20px;
}

@keyframes about_us {
    from {
        opacity: 0;
        top: 20px;
    }

    to {
        opacity: 1;
        top: 0px;
    }
}

.about_text {
    width: 720px;
    font-size: 22px;
    line-height: 38px;
}

.about_text,
.about_img {
    margin: 0 15px;
}

.about_wx {
    width: 180px;
}

.about_foot {
    position: relative;
    padding: 70px 0;
    display: flex;
    justify-content: center;
    animation: about_foot 1s forwards;
    display: none;
}


@keyframes about_foot {
    from {
        opacity: 0;
        top: 30px;
    }

    to {
        opacity: 1;
        top: 0px;
    }
}

.wx_text {
    text-align: center;
}

.about_wx, .about_detailed {
    margin: 0px 20px;
}

.about_detailed {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.about_detailed div {
    margin: 10px 0px;
}