.l-header__menuBtn__sp-only{
    display: none;
}

.header-menu-gn{
    display: block;
}

@media (max-width:640px){
    .l-header__menuBtn__sp-only{
        display: block;
    }
    .header-menu-gn{
        display: none;
    }
}

.c-btn-a-box{
    padding: 40px 0;
}