@media (min-width: 1500px) and (max-width: 1700px) {
    .nav {
        display: inline-block;
        float: right;
    }

    .nav ul {
        margin-right: 30px;
    }

    .lisnj {
        margin-left: 30px;
    }

    .nav ul li {
        margin-right: 20px;
    }
}

@media (min-width: 1280px) and (max-width: 1500px) {
    .nav {
        display: inline-block;
        float: right;
    }

    .nav ul {
        margin-right: 10px;
    }

    .lisnj {
        margin-left: 10px;
    }

    .nav ul li {
        margin-right: 10px;
    }
}

@media (min-width: 1280px) and (max-width: 1400px) {
    .sousuo input[type=text] {
        width: 120px;
        height: 26px;
    }

    .sousuo font {
        display: block;
        position: absolute;
        right: 10px;
        font-size: 19px;
        color: white;
        top: 3px;
        cursor: pointer;
    }

    .lisnj span {
        font-size: 20px;
    }
}


@media (min-width: 1280px) and (max-width: 1920px) {
	
	.moblie_head{display:none;}
	.a_txt{display:none;}
}


@media (max-width: 800px) {
	header{display:none;}

}