.yizuo a{
margin:0 15px;
color:#a00
}
.yizuo a:hover{
color:#f00
}
.zwz h3 {
    margin-bottom: 0;
    font-weight: bold;
    font-size: 19px;
    color:#000;
    text-shadow: 0 0 10px #ffff00,
                    0 0 20px #ffff00,
                    0 0 30px #ffff00,
                    0 0 40px #fff700,
                    0 0 70px #fff700,
                    0 0 80px #fff700,
                    0 0 100px #fff700,
                    0 0 150px #fff700;
}
.zwz h3{
   animation: light 1.5s ease infinite alternate;
}
.btnav{display:flex;flex-wrap:nowrap;align-items:center;justify-content:center;margin:0 auto;width:80%;height:100%;font-size:18px;font-weight:bold}.btn{padding:.8rem 1.6rem;position:relative;background:linear-gradient(cyan,transparent),linear-gradient(-12deg,#f9daf6,transparent),linear-gradient(12deg,#ba2a8d,transparent);text-decoration:none;border-radius:50%;overflow:hidden}.btn:hover{box-shadow:1px 1px 25px 10px rgba(146,148,248,0.4)}.btn:before{content:"";position:absolute;top:0;width:100%;height:100%;}.btn:hover:before{left:100%}