.m-subNav { display : none;}
.pc-subNav {display : flex; width : 100%;     justify-content: center; margin: 3rem auto 0;}
.pc-subNav div {
    width: 350px;
    height: 49px;
    font-size: 18px;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 1px solid #a6a6a6;
    color : gray;
}
.pc-subNav .is_active {background : #00bfe6; color : white;}

@media (max-width: 769px) {
    .m-subNav { display : block;}
    .pc-subNav { display : none;}
    .common-nav ul li a { font-size : 1.5rem !important;}
}