.dropdwn{
    max-width: 900px;
    display:flex;
    }
    
ul{
    text-align: center;
    list-style-type: none;
    margin-top:0px;
    margin-right:auto;
    margin-left:auto;
    margin-bottom:0px;
    color: #333333;
    }

ul li {
  padding-top:4px; 
  padding-bottom:3px;
}

li{
    max-width:;
    position: relative;
    padding: 5px;
    display: block;
    cursor: pointer;
}

.dropdwn-haikei{
 background:#ffffff;
}
.dropdwn>li{
    width:1200px;
    margin: 1px;
    background:#fff;
    display: inline;
}

.dropdwn_menu{
    width: 100%;
    display: none;
    position: absolute;
    margin-left: 0px;
    margin-top:0px;
    margin-bottom:0px;
    padding: 0;
    background:#E6E6E6;
}



.dropdwn_menu li{
    width: 100%;
}

.dropdwn_menu li a{
    padding: 5px 0;
    margin: -5px 5px -5px -5px;
    display: block;
    color:#333333;
}

li a:hover{
    background:none;
    text-decoration: none;
    color: #487ca3;