@media (max-width:480px){
    .product-banner-home{
        height:25rem;
        background:url('../img/product/yxglbg.jpg') no-repeat center;
    }
    .product-banner-button{
        border-radius: 16px;
    }
    .phone-btn{
        margin-left:12rem
    }
    .phone-presentation{
        padding:0 2rem 4rem 2rem;
    }
    .pre-text{
        margin-top:2rem;
    }
    .pre-text P{
        line-height: 2rem
    }
    .phone-pre-text{
        /* text-align: left; */
    }
    .pre-img2{
        margin-top:2rem;
    }
    .pre-img{
        display: none;
    }
    .phone-img{
        width:100%;
        padding:2rem;
    }
    .phone-radius{
        border:1px solid #348DE3;
        background-color: #348DE3;
        border-radius:50%;
        display: inline-block;
        height:6px;
        width:6px;
        margin:2px .5rem;
    }
    .phone-btn4{
        width:120px;
        margin-left: 12rem
    }
    .phone-glText{
        margin-left:2rem;
    }
   .phone-deep-text{
       display: none;
   }
   .phone-deep{
       /* text-align: left; */
   }
   .phone-color{
       color:white;
   }
   .phone-size{
       font-size:22px;
   }
   .phone-center{
       text-align: center;
       margin-bottom: 4rem;
   }
   
}

@media (min-width:500px){
    .pre-img{
        display: inline-block
    }
    .phone-img{
        display: none;
    }
    .phone-global-text{
        display: none;
    }
    .phone-deep{
        display: none;
    }
    .phone-deep-text{
        display: block;
    }
}