.iprobuttons[name="buttonok"] {
    background-color: rgb(163, 167, 105);
}

.iprobuttons[name=buttoncancel] {
    background-color: rgb(174, 147, 162);
}

.iprobuttons[name=buttonhelp] {
    background-color: rgb(124, 152, 169);
}

.iprobuttons[name=buttonprint] {
    background-color: rgb(89, 155, 215);
}

/*.iprobuttons[name=buttonhelp] {
         position:relative;
    top:-0.2em; nur in chrome verschoben!
    }*/

   .iprobuttons[name=buttonok], .iprobuttons[name=buttoncancel], .iprobuttons[name=buttonhelp], .iprobuttons[name=buttonprint] {
        border-top-left-radius: 10px;
        box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
        transition: all 0.3s cubic-bezier(.25,.8,.25,1);
    }