@media screen and (min-width: 320px) and (max-width: 480px) {
    html{
        background: url("../img/bg-phone.png") no-repeat;
    }
    .form-wrap{
        width: 90%;
        margin: 115px auto;
        min-width: 300px;
    }
    .left-line{
        width: 20%;
    }
    form .line-input{
        width: 80%;
    }
    .welcome{
        font-size: 31px;
    }
    .left-line{
        border-radius:0 3px 3px 0;
    }
    .line-input{
        border-radius:0 3px 3px 0;
    }
    .nav-top{
        display: none;
    }
    .yun{
        margin-right: 0;
    }
    .forget{
        margin-right: 2px;
    }
}