.button-blue,
.button-primary {
    background-color: #2d3748;
    border-bottom: 8px solid #2d3748;
    border-left: 18px solid #2d3748;
    border-right: 18px solid #2d3748;
    border-top: 8px solid #2d3748;
}

.button-green,
.button-success {
    background-color: #48bb78;
    border-bottom: 8px solid #48bb78;
    border-left: 18px solid #48bb78;
    border-right: 18px solid #48bb78;
    border-top: 8px solid #48bb78;
}

.button-red,
.button-error {
    background-color: #e53e3e;
    border-bottom: 8px solid #e53e3e;
    border-left: 18px solid #e53e3e;
    border-right: 18px solid #e53e3e;
    border-top: 8px solid #e53e3e;
}