.header {
    background: rgb(255, 255, 255);
    background: -moz-linear-gradient(top, rgba(255, 255, 255, 1) 0%, rgba(243, 243, 243, 1) 100%);
    background: -webkit-linear-gradient(top, rgba(255, 255, 255, 1) 0%, rgba(243, 243, 243, 1) 100%);
    background: linear-gradient(to bottom, rgba(255, 255, 255, 1) 0%, rgba(243, 243, 243, 1) 100%);
    filter: progid: DXImageTransform.Microsoft.gradient( startColorstr='#ffffff', endColorstr='#f3f3f3', GradientType=0);
    box-shadow: 0 1px 6px rgba(0, 0, 0, 0.12), 0 1px 30px rgba(0, 0, 0, 0.5);
    transition: all 450ms cubic-bezier(0.23, 1, 0.32, 1) 0ms;
    -webkit-transition: all 450ms cubic-bezier(0.23, 1, 0.32, 1) 0ms;
    height: 80px;
    top: -80px;
}
.sf-menu li a {
    color: #303843;
    font-size: 14px;
    height: 80px;
    line-height: 34px;
}
.f-nav {
    top: 0;
}
.sf-menu li.current a {
    color: #303843;
    background: #F3F3F3;
}