.x1d1 {
    margin-top: 50px;
}
.x1d2 {
    width: 23%;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.x1i1 {
    width: 60px;
    padding-bottom: 20px;
}
.x1s1 {
    padding-bottom: 20px;
    letter-spacing: 1px;
}
.x1s1, .x1s2 {
    text-align: center;
}

@media screen and (max-width: 960px) {
    .x1d1 {
        flex-wrap: wrap;
    }
    .x1d2 {
        width: 45%;
        margin-top: 65px;
    }
} 

@media screen and (max-width: 560px) {
    .x1d1 {
        flex-direction: column;
        align-items: center;
    }
    .x1d2 {
        width: 70%;
    }
}

@media screen and (max-width: 350px) {
    .zh11 {
        font-size: 40px;
    }
    .x1s1 {
        text-align: center;
    }
}