.top-menu {
    height: 50px;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    position:relative;
    color: #fff;
    z-index: 100;
    transition: all .3s;
}

.row {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}


ul {
    height: 100%;
}
ul {
    padding: 0;
}

.top-menu ul {
    float: right;
    margin: 0 5px 0 0;
}

.top-menu ul li {
    width: 113px;
    height: 50px;
    float: left;
    cursor: pointer;
    border-radius: 5px;
    transition: all .3s;
}

.top-menu ul li>a {
    height: 100%;
	display:block;
}

.top-menu ul li:nth-child(1) {
    background: url(../images/top-menu_01.png) center bottom no-repeat;
}

.top-menu ul li:nth-child(2) {
    background: url(../images/top-menu_02.png) center bottom no-repeat;
}

.top-menu ul li:nth-child(3) {
    background: url(../images/top-menu_03.png) center bottom no-repeat;
}

.top-menu ul li:nth-child(4) {
    background: url(../images/top-menu_04.png) center bottom no-repeat;
}

.top-nav {
    top: 0;
    height: 50px;
    position: fixed;
    width: 100%;
    background-color: rgba(0, 0, 0, 1.0);
    padding: 0 0 0 10px;
    line-height: 50px;
    color: #fff !important;
    font-size: 18px;
    z-index: 100;
}

.hidden-lg {
    display: none;
}

.hide-pcmu{
	display: block;
}

@media screen and (max-width: 768px){
.hidden-lg {
    display: block;
}

.hide-pcmu{
	display: none;
}
}

.cover {
    display: none;
    z-index: 100;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: rgba(0, 0, 0, 0.92);
}

#nav_close {
    position: fixed;
    z-index: 101;
    top: 5px;
    right: 0px;
    width: 65px;
    height: 50px;
    cursor: pointer;
    transition: all .5s;
    border-radius: 50%;
    background-image: url(../images/nav_open.png);
}

#nav_open {
	position: fixed;
	z-index: 101;
    top: 5px;
    right: 0px;
	width: 65px;
	height: 50px;
	cursor: pointer;
	transition: all .5s;
	border-radius: 50%;
	background-image: url(../images/nav_close.png);
    display: none;
}