.panel-primary > .panel-heading
{
    background: linear-gradient(140deg, #337ab7 0%, #28a7d6 50%, #2cb5e8 75%);
}

.panel-success > .panel-heading 
{
    background: linear-gradient(140deg, #8daf6a 0%, #caedad 50%, #d6e9c6 75%);
}

.panel-info > .panel-heading
{
    background: linear-gradient(140deg, #c5eef7 0%, #bce8f1 50%, #a9dae5 75%);
}

.panel-danger > .panel-heading
{
    background: linear-gradient(140deg, #e0b1b8 0%, #f7d4d9 50%, #ebccd1 75%);
}


.btn-primary {
    background: linear-gradient(140deg, #4992d1 0%, #337ab7 50%, #2e6da4 75%);
}

.btn-success {
    background: linear-gradient(140deg, #6edd6e 0%, #5bcc5b 50%, #5cb85c 75%);
}

.btn-info {
    background: linear-gradient(140deg, #67c0db 0%, #54b6d3 50%, #469fba 75%);
}

.btn-danger {
    background: linear-gradient(140deg, #f7635d 0%, #ef504a 50%, #d9534f 85%);
}