#btn_1 {
    position: absolute;
    top: 0px;
    right: 0px;
}

#btn_2 {
    position: absolute;
    top: 0px;
    right: 0px;
}

#btn_3 {
    position: absolute;
    top: 0px;
    right: 0px;
}

#btn_4 {
    position: absolute;
    top: 0px;
    right: 0px;
}

#btn_5 {
    position: absolute;
    top: 0px;
    right: 0px;
}

#btn_6 {
    position: absolute;
    top: 0px;
    right: 0px;
}