.x1 h1{
    height: 7.5rem /* 120/16 */;
    font-size: 2.5rem /* 40/16 */;
    text-align: center;
    margin: 3.75rem /* 60/16 */;
    font-weight: 12.5rem /* 200/16 */;
}
.x1 h1 p{
    font-size: 1.0625rem /* 17/16 */;
    margin-top: 1.875rem /* 30/16 */;
    text-align: center;
}
.y1{
    margin-top: 11.25rem /* 180/16 */;
}
.y1 h1{
    font-size: 2.5rem /* 40/16 */;
    font-weight: 500;
    text-align: center;
    margin: 3.75rem /* 60/16 */;
}
.y1 ul{
    margin-left: 7.5rem /* 120/16 */;
    height: 10.625rem /* 170/16 */;
}
.y1 ul li{
    float: left;
    padding-left: 12.5rem /* 200/16 */;
}
.y1 ul li h2{
    font-size: 1.25rem /* 20/16 */;
    text-align: center;
    font-weight: 500;
    margin-top: 1.25rem /* 20/16 */;
}

.y2 ul{
    margin-left: 7.5rem /* 120/16 */;
    height: 10.625rem /* 170/16 */;
}
.y2 ul li{
    float: left;
    padding-left: 12.5rem /* 200/16 */;
}
.y2 ul li h2{
    font-size: 1.25rem /* 20/16 */;
    text-align: center;
    font-weight: 500;
    margin-top: 1.25rem /* 20/16 */;
}
.y3{
    height: 50rem /* 800/16 */;
}
.y3 h1{
    font-size: 1.875rem /* 30/16 */;
    font-weight: 500;
    text-align: center;
    margin: 3.75rem /* 60/16 */;
}
.y3 .a img{
    display: none;
}
@media screen and (max-width: 1000px){
    .x1 h1{
        font-size: 1.5rem /* 40/16 */;
        height: fit-content;
        margin: 2.75rem /* 60/16 */;
    }
    .y1{
        margin-top: 3rem;
    }
    .y1 h1{
        font-size: 1.5rem /* 40/16 */;
        margin: 2.75rem /* 60/16 */;
    }
    .y1 ul{
    width: 100vw;
    padding-left: 1rem;
    margin: auto;
    }
    .y1 ul li{
        margin: 1rem;
        padding: 0;
    }
    .y2 ul{
        width: 100vw;
        padding-left: 1rem;
        margin: auto;
        }
        .y2 ul li{
            margin: 1rem;
            padding: 0;
        }
        .y3 h1{
            font-size: 1.5rem /* 30/16 */;
            margin: 2.75rem /* 60/16 */;
        }
        .y3 img{
            width: 97vw;
            height: auto;
            margin: 0;
        }
        .y3 .b img{
            display: none;

        }
        .y3 .a img{
        
            display: block;
        }
        .y3{
            height: fit-content;
        }
}