.public-banner {height: 450px;position: relative;}
.public-banner img {width: 100%;height: 100%;object-fit: cover;-o-object-fit: cover;}
.public-banner .pbc-tit {position: absolute;top: 45%;left: 50%;width: 75%;transform: translate(-50%, -50%);}
.pbc-tit h1 {font-size: 38px;color: #fff;}