.container .container-title{
    text-align: center;
    font-size: 30px;
    font-weight: bolder;
    margin-bottom:25px;
}
.container p{
    font-size: 18px;
    text-indent: 2em;
    line-height: 2.3;
    font-weight: 600;
}
.situation .imgs{
    margin: 0 auto;
    width: 1100px;
}
.situation .imgs img{
    float: left;
    width: 540px;
    height: 400px;
    margin-top: 10px;
    margin-bottom: 10px;
}
.situation .imgs :nth-child(2n){
    margin-left: 20px;
}