.banner {
    width: 100%;
    position: relative;
}

.banner img {
    display: block;
    width: 100%;
}

.main .container {
    width: 1400px;
}
.main .content {
    margin-top: 30px;
    line-height: 30px;

}
.main .content>p {
    text-indent: 2em;
    margin-top: 10px;
    font-weight: 400;
    color: #343c49;
}

.about-pic img {
    margin-top: 30px;
    width: 49%;
    margin-right: 2%;
    float: left;
    box-shadow: 1px 1px 4px 1px rgba(0, 0, 0, 0.3);
    
}
.about-pic img:nth-child(2){
    margin-right: 0;
}




@media screen and (max-width: 1450px) {
    .main .container {
        width: 1200px;
    }
}

@media screen and (max-width: 1250px) {
    .main .container {
        width: 1000px;
    }
}

@media screen and (max-width: 1050px) {
    .main {
        background-image: inherit;
        padding-top: 20px;
    }

    .main .container {
        width: 100%;
        box-sizing: border-box;
        padding: 0 10px;
        background-color: #ffffff;
    }

}

@media screen and (max-width: 800px) {
   .about-pic img {
       width: 100%;
       margin-top: 10px;
   }
}