.nf-keyboard-content{
    position: fixed;
    left: 0;
    bottom: 0;
    z-index: 1000;
    width: 100%;
    background: #fff;
}
.nf-keyboard-content .nf-keyboard-number{
    display: flex;
    flex-wrap: wrap;
}
.nf-keyboard-content .nf-keyboard-number div{
    width: 33.3333%;
    height: 60px;
    font-size: 24px;
    font-family: AlteDIN1451Mittelschriftgepraegt;
    color: #333333;
    text-align: center;
    line-height: 60px;
    box-sizing: border-box;
    border-top: #edeef2 1px solid ;
    border-right: #edeef2 1px solid ;
}
.nf-keyboard-content .nf-keyboard-number div:nth-child(3n){
    border-right: 0;
}
.nf-keyboard-content .nf-keyboard-btm-left,.nf-keyboard-content .nf-keyboard-btm-right{
    background-color: #f1f1f1;
}