@media only screen and (max-width:550px) {
    .logo_crd{
        width: 40%;
    }
    .btn_abrir{
        bottom: 75px;
        right: 25px;
    }

    .page_title {
        font-size: 12px;
    }

    #side_menu{
        bottom: 245px;
        width: 350px;
    }
    .social_link a{
    width: 60px;
    height: 60px;
    line-height: 60px;
    bottom: 10px;    
}
.ul_footer{
    position: relative;
    bottom: 0px;
    right: 0px;
    top: 50px;
    display: block;
    
}
h4{
    text-align: center;
    vertical-align: middle;
    font-size: 18px;
    position: relative;
    bottom: 60px;
}
    
}