/* BASIC css start */
body #header .headerBottom {background: transparent;}
body #header .headerBottom h1 {display:none;}

.intro_brand {position:relative;}
.intro_brand .back {position: fixed;top: 20px;left: 25px;z-index: 100;}
.intro_brand .back img {width:16px;margin-top: -3px;}
.intro_brand .back span {font-size: 16px;color: #fff;line-height: 20px;font-weight: 500;display: inline-block;margin-left: 10px;}
.intro_brand .intro_main {position:relative;}
.intro_brand .intro_main > img {display:block;width:100%;}
.intro_brand .intro_main strong {position:absolute;top: 50%;left: 50%;transform: translate(-50%, 0%);opacity:0;transition: opacity 1s ease, transform 1s ease;}
.intro_brand .intro_main strong.on {opacity: 1;transform: translate(-50%, -50%);}
.intro_brand .intro_main strong .sub {font-size: 16px;font-weight: normal;color: #fff;display: block;text-align: center;margin-top: 20px;}
.intro_brand .b_nav {background: rgba(25, 26, 27, 0.79);padding:6px 0;}
.intro_brand .b_nav ul {display:flex;align-items: center;justify-content: space-around;}
.intro_brand .b_nav ul li a {color:#fff;font-size: 14px;line-height: 37px;}
.intro_brand .b_nav ul li a.on {font-weight:700;}
.intro_brand .b_cont img {display:block; width:100%;}

/* BASIC css end */