/*
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xs-maxsmall，超小；sm-small，小；md-medium，中等；
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*/
@media (max-width: 767px) {
    .fot_logo img{
        margin-bottom:30px;
    } 
    .fot_contact {
        float: left;
    }
    .col-x {
        margin-bottom:0px;
    }
}