.about_us{margin-bottom: 50px;}
.about_us p{color: #4d4d4d;font-size: 18px;line-height: 30px;}
.about_us>div{}
.about_us h2{padding: 20px 0;color: #0e527d;}
.about_us_one{max-width: 1186px;}
.about_us_one>h3{font-size: 26px; line-height: 28px; font-weight: 700; letter-spacing: 2px;}
.about_us_one>span{margin-bottom: 20px; display: block; color: #b8860b; font-weight: bold; font-size: 17px;}
.about_us_one>ul{display: flex; flex-wrap: wrap; justify-content: center; align-items: flex-start;padding: 60px 0 20px 0;}
.about_us_one>ul>li{width: 21%; display: flex; flex-direction: column; justify-content: center; align-items: center;}
.about_us_one>ul>li>div{border: 4px solid #0e527d; border-radius: 71px;border-bottom-color: darkgoldenrod; width: 120px; height: 120px; display: flex; align-items: center; justify-content: center;}
.about_us_one>ul>li>div:hover{background-color: #e3f6fd;}
.about_us_one>ul>li>div>span{color: #0e527d; font-size: 20px; font-weight: bold;}
.about_us_one>ul>li>p{text-align: center; width: 80%;padding-top: 10px;line-height: 20px;color: #0e527d; font-weight: bold;}
.about_us_two{}
.about_us_two>div{width: 1186px;background-color: #0e527d; background-image: url(/images/about_bg.jpg); background-position: right; background-repeat: no-repeat; background-size: contain;}
.about_us_two>div>div{background-image: url("/images/about-us.png");background-size: contain; background-repeat: no-repeat; height: 240px;display: flex; align-items: center;}
.about_us_two>div>div>ul{}
.about_us_two>div>div>ul>li{list-style: inside; line-height: 31px; font-weight: bold; color: #f1f5f8; width: max-content; margin-bottom: 10px; padding: 2px 10px 0 50px; font-size: 20px;}
#aboutus
{
    animation:aboutus 2s infinite alternate;
    /*Safari 和 Chrome:*/
    -webkit-animation:aboutus 3s infinite alternate;
}
@media screen and (max-width: 480px) {
    .about_us_one{margin: 10px;}
    .about_us_one>ul>li{width: 50%;padding-bottom: 20px;}
    .about_us_two>div{background-size: cover; background-position: bottom;width: 100%;}
    .about_us_two>div>div{height: 200px; background-color: #0e527d;background-image: none;}
    .about_us_two>div>div>ul>li{padding: 2px 10px 0 10px; font-size: 18px;}
}
@keyframes aboutus
{
    from {border: 4px solid #0e527d;border-bottom-color: #eca902;}
    to {border:4px solid #1883c5;border-bottom-color: darkgoldenrod;}
}

/*Safari 和 Chrome:*/
@-webkit-keyframes aboutus
{
    from {border: 4px solid #0e527d;border-bottom-color: darkgoldenrod;}
    to {border:4px solid #1883c5;border-bottom-color: #eca902;}
}