body {
    overflow-x: hidden;
}
 .menuBG
 {/*藍色標頭*/
	background-color: transparent;
    font-size: 20px;
    top:0; left:0; right: 0;
    z-index: 100;
    justify-content: center;
    align-items: center;
    padding: 2px;
    opacity: 1; 
    width:100vw ;
    margin: 0  auto 0 0; 
    max-width: 1024px;
    min-width: 320px;
    margin: 0 auto; 
}
/*三明治下拉選單*/
#menu-bar{
    display: none;
}
.btn_field > ul {
    position: relative;
    top: 20px;
    left: 0%;
}

.Online {/*線上人數*/
    color: blue;
    font-size: large;
    text-decoration: none;
    white-space: nowrap;
    position: relative;
    right: 15px;
    top: 25px;
}

.logo img {
        width: 80%; 
        height: 80px; /* 自動高比 */
    }   
@media (max-width:610px){
        .logo img {
        width: 50vw; 
        left: 45%;
        position: relative;
    }  
    .btn_field > ul {
        position: absolute;
        top:90px ;
        left:32%;
        text-align: left;
        padding-left: 0;
        margin-left: 0;
    }
    
    .btn_field li {
        list-style: none;
        display: inline-block;
        margin-right: 10px;
    }
    .Online {
        display: inline-block; 
        position: absolute; 
        color: blue;
        font-size: large;
        text-decoration: none;
        left:43%; 
        top:125px ;
        padding-right: 0px;
    }
}
 @media (max-width: 560px){
    .btn_field > ul {
        left:30%;
    }
    .Online {
        left:42%;
    }
}
@media (max-width:500px){
    .logo img {
        left: 50%;
    }
} 
 @media (max-width: 426px){
    .logo img {
        left: 38%;
    } 
    .btn_field > ul {
        left:23%;
    }
    .Online {
        left: 38%; 
        }
    }

/*@media (max-width: 414px){

    .btn_field > ul {
        left:70px;
    }
    .Online {
        left: 140px; 
    }
}*/
@media (max-width: 376px){
    .logo img {
        width:180px; 
        left: 40%;
    } 
    .btn_field > ul {
        left:20%;
    }
    .Online {
        left: 38%; 
        }
    }
@media (max-width:  320px){
    .logo img {
        left: 35%;
    } 
    .btn_field > ul {
        left:15%;
    }
    .Online {
        left: 35%; 
        }
    }