.nav1{
    width: 1400px;
    margin: 0 auto;}
.nav1 li{
    position: relative;
    width: 12.5%;
    color: #fff;
    font-weight: 700;
    float: left;
    line-height: 45px;
    text-align: center;}
.nav1 li a{    color: #fff;
    font-size: 16px;}
.nav1 li:hover{
background:#00622e;}
.nav1 li:hover a{
 color:#fff;}
.nav1 li ul.sub_nav{
    position: absolute;
    z-index: 999;
    left: 0%;
    top: 100%;
    bottom: auto;
    background: rgba(3,125,61,0.8);
    width: 100%;
    visibility: hidden;
    opacity: 1 !important;}
.nav1 li ul.sub_nav li{
width:100%;}
.nav1 li:hover ul.sub_nav{
    opacity: 1;
    visibility: visible;
    top: 100%;
    transition: opacity 0.5s ease;
    -webkit-transition: opacity 0.5s ease;
    -moz-transition: opacity 0.5s ease;
    -o-transition: opacity 0.5s ease;}
.nav1 li ul.sub_nav li:hover{
background:#00622e;}
.nav1 li ul.sub_nav li:hover a{
 color:#fff;}
.nav1 li ul.sub_nav a{color: #fff;}