.btn-info {
    background: linear-gradient(45deg, red, blue);
}
.btn-primary {
    background: linear-gradient(45deg, rgb(0, 44, 241), rgb(0, 238, 255));
}
.btn-danger {
    background: linear-gradient(45deg, red, rgb(255, 136, 0));
}
.btn-warning {
    background: linear-gradient(45deg, rgb(255, 230, 0), rgb(51, 51, 51));
}
.btn-success {
    background: linear-gradient(45deg, rgb(0, 255, 76), rgb(2, 248, 236));
}