html,
body {
    background-color: #f5f7fa;
}

.displaySetting {
    width: 1102px;
    margin: 80px auto 100px;
}

.step_1 {
    display: block;
    width: 100%;
    border-radius: 8px 8px 0 0;
}

.step_2 {
    width: 100%;
    margin: 0 auto;
    box-sizing: border-box;
    padding: 100px 286px;
    display: flex;
    justify-content: space-between;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0px 5px 8px rgba(0, 0, 0, 0.1);
}

.step_2 div{
    height: 240px;
    width: 240px;
    cursor: pointer;
    border-radius: 8px;
    box-shadow: 0px 0px 5px rgba(0, 0, 0, 0.1);
}

.step_2 div img{
    width: 100%;
}
.step_2 div img:nth-child(1),.step_2 .active img:nth-child(2){
    display: block;
}
.step_2 div img:nth-child(2),.step_2 .active img:nth-child(1){
    display: none;
}