header #top_msg {
    color: #999999;
    font-size: 1.4em;
    line-height: 2;
    padding: 10px 0;
    white-space: nowrap;
}

#rank {
    color:#999999;
    font-size: 1.2em;
    margin: 10px 0;
}	

#rank span {
    line-height: 1.5;
    white-space: nowrap;
}	

.bt_mobile {
    width: 30%;
    font-size: 1.2em;
}

.tb1 tr th {
    font-size: 1.2em;
}

.button1 {
    width: 50%;
    font-size: 1.2em;
    margin: 20px 0;
    padding: 10px;
}

.rank, .vote {
    text-align: right;
    padding-right: 10px;
    white-space: nowrap;
}

@media screen and (max-width: 640px) {

    header div img {
        width: auto;
        max-width: 100%;
    }
    
    #pageTop {
        bottom: 12%;
    }
    
    .bt_mobile {
        display: block;
        width: 95%;
        margin: 5px auto;
    }
    
    .tb1 tr th {
        font-size: 1.0em;
    }
}