#menu-ad-b {
    width: 100%;
    text-align: center;
}

#menu-ad-b1 {
    background-color: blue;
    color: white;
    width: 50px;
    margin: auto;
    border-radius: 25px;
    height: 50px;
    padding: 14px;
}

#menu-ad-b2 {
    background-color: blue;
    color: white;
    width: 50px;
    margin: auto;
    border-radius: 25px;
    height: 50px;
    padding: 14px;
}