.class_nav{display: none;}
@media (max-width: 767px){
    .btn_mobile_menu>i{display: none;}
    .class_nav {display:flex;background-color: #01C4D4;margin-top:-10px;text-align: center;}
    .class_nav a{color: #000;text-decoration: none;color: #FFF;}
}
@media (max-width: 320px){
}