.button-white-on-black, .button-white-on-white, .button-black-on-white, .button-black-on-black, .button-white-on-grey, .button-black-on-grey {
    display: inline-block;
    background-color: #ffffff;
    border-color: #ffffff;
    border-style: solid;
    border-width: 1px;
    color: #000000;
    cursor: pointer;
    border-radius: 20px;
    transition:
        background-color 0.2s,
        color 0.2s;
    padding-left: 16px;
    padding-right: 16px;
    padding-top: 4px;
    padding-bottom: 5px;
    margin-top: 30px;
    margin-bottom: 20px;
    margin-right: 8px;
    font-size: 15px;
}
.button-black-on-white, .button-black-on-grey {
    background-color: #000000;
    border-color: #000000;
    color: #ffffff;
}
.button-white-on-white, .button-white-on-grey {
    border-color: #000000;
}
.button-black-on-black {
    border-color: #ffffff;
    background-color: #000000;
    color: #ffffff;
}
.button-white-on-grey {
    background-color: #F5F6F8;
}



.button-white-on-black:hover, .button-white-on-white:hover, .button-white-on-grey:hover {
    background-color: #000000;
    color: #ffffff;
}
.button-white-on-black:active, .button-white-on-white:active, .button-white-on-grey:active {
    background-color: #353535;
}
.button-black-on-white:hover, .button-black-on-black:hover, .button-black-on-grey:hover {
    background-color: #ffffff;
    color: #000000;
}
.button-black-on-white:active, .button-black-on-black:active {
    background-color: #353535;
    color:#ffffff;
}