.third-update-box{width: 100%;height: 100%;position: fixed;top: 0;left: 0;background: rgba(56, 56, 56, 0.4);z-index:1000000;}
.third-update-box-main{position: absolute;left: 50%;top:50%;transform: translate(-50%,-50%);background-color: #ffffff;padding:40px 0;border-radius: 4px;text-align: center;
    width: 90%;max-width: 400px;overflow: hidden;}
.third-update-box img{width: 60%;margin: 0 auto;}
.third-update-box p{color: #4f4f4f;font-size: 18px;margin: 10px 0 0 0;}
.third-update-box p.back{text-decoration-line: underline;color: #28B28B;font-size: 14px;cursor: pointer;}
.third-update-box button{color: #fff;font-size: 16px;width: 70%;background: #28B28B;height: 38px;line-height: 38px;border-radius: 20px;}
@media screen and (max-width:751px){
    .third-update-box{padding:.8rem 0;}
    .third-update-box p{font-size: .36rem;margin: .2rem 0 0 0;}
    .third-update-box p.back{font-size: 0.28rem;}
    .third-update-box button{font-size: .34rem;height: 0.76rem;line-height: 0.76rem;border-radius: 0.38rem;}
}