.bg2 {
    height: 1109px;
    background: url("../images/difficulty4.jpg") no-repeat 50%;
}

.bg3 {
    height: 1050px;
    background: url("../images/advantage4.png") no-repeat 50%;
}

.bg4 {
    height: 700px;
    background: url("../images/question4.png") no-repeat 50%;
}

.ServiceProject .content>.right>li {
    width: 435px;
}

.ServiceProject .content > .right > li:not(:nth-child(3n)) {
    margin-right: 0;
  }
  .ServiceProject .content > .right > li:not(:nth-last-child(-n+3)) {
    margin-bottom: 0;
  }

.ServiceProject .content>.right>li:not(:nth-child(even)) {
    margin-right: 24px;
}

.ServiceProject .content>.right>li:not(:nth-last-child(-n+2)) {
    margin-bottom: 22px;
}