header {position:fixed;left: 0;top: 0;width: 100%;z-index: 10;background-color: #fff;height: 10rem;box-shadow: 0 0 .1rem rgba(0, 0, 0, .1);}
header h1 {}
header h1 a {display: block; height: 5.5rem; text-align: center;padding: 1.5rem 0; border-bottom: 1px solid #eee;}
header h1 a img {height: 100%;}
header ul {display:flex; justify-content:space-between; padding: 0.5rem 3rem; margin: 1rem 0;}
header ul li {text-align: center;}
header ul li a { font-size:1.6rem; position: relative;}
header ul li a.active {color:#0e72e4; border-radius:2rem; position: relative;}
header ul li a.active::after {content: ""; width: 100%; height: 3px; background-color: #0e72e4; position: absolute; top: 100%; left: 0; margin-top: 3px;}
/* header ul li a::after {content:''; display:block; width: 1px; height: 1.4rem; background: #eee; position: absolute; right: -4rem; top:0.4rem;} */