.navbar-brand img{    width: 175px;}
.navbar-nav{    margin-top: 20px;}
.navbar-nav a{color: #565656;}
.navbar-nav a:hover{color: red;}
.header{height: 71px; margin-bottom: 30px;}
.navbar{        background: rgb(0 0 0 / 28%);
    min-height: 100px;}
.legend-logo{width: 173px;
    padding-top:23px;
    margin-left: 2%;}
#navbar{    margin-top:5px;
    margin-right: 15px;
height: 0px;
transition: all 0.8s;
-moz-transition: all 0.8s;  /* Firefox 4 */
-webkit-transition: all 0.8s;   /* Safari 和 Chrome */
-o-transition: all 0.8s;    
}
#navbar a{color: #fff;font-size: 16px;}
.navbar-brand img{width: 50%;margin-top: 5px;}
.nav>li>a:focus, .nav>li>a:hover {
    background-color: #f97474;
}
.legend-nav-bar{float: right;
    color: #fff;
    font-size: 2em;
    margin-top: 2.5%;
    margin-right: 2%;
    display: none;}