.btn-circle {
    width: 30px;
    height: 30px;
    text-align: center;
    padding: 6px 0;
    font-size: 12px;
    line-height: 1.428571429;
    border-radius: 15px;
}

    .btn-circle.btn-xs {
        width: 40px;
        height: 40px;
        padding: 13px 7px;
        font-size: 14px;
        line-height: .5;
        border-radius: 20px;
    }

    .btn-circle.btn-lg {
        width: 50px;
        height: 50px;
        padding: 14px 13px;
        font-size: 18px;
        line-height: 1.33;
        border-radius: 25px;
    }

    .btn-circle.btn-xl {
        width: 70px;
        height: 70px;
        padding: 10px 16px;
        font-size: 24px;
        line-height: 1.33;
        border-radius: 35px;
    }

.btn-blank {
    border: 1px solid black;
    background:#000;
    background-color: white;
    color: black;
    text-shadow: initial;
    height: 36px;
    margin-right:15px;
}