.button {
    display: inline-block;
    padding: 5px 20px;
    background: transparent;
    border: none;
    color: #20B876;
    font-size: 16px;
    cursor: pointer;
    text-transform: capitalize;
    margin-right: 15px;
    box-shadow: 0 0 2px #20B876;
}

.button:hover {
    background-color: #20B876;
    color: #fff;
    transition: .3s;
}

.button:active,
.button.is-checked {
    color: #fff;
    background: #20B876;
}

.button-group {
    margin-bottom: 60px;
}

@media only screen and (max-width: 767px) {
    .button {
        padding: 10px 18px;
        font-size: 12px;
        margin-bottom: 11px;
    }
    .button-group {
        margin-bottom: 40px;
    }
}