body:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: .7;
    background: #07f;
    background: -moz-linear-gradient(-37deg, #95DF00 0%, #6BD148 11%, #00AFFF 40%, #0077FF 92%);
    background: -webkit-linear-gradient(-37deg, #95DF00 0%, #6BD148 11%, #00AFFF 40%, #0077FF 92%);
    background: linear-gradient(-37deg, #95DF00 0%, #6BD148 11%, #00AFFF 40%, #0077FF 92%);
}

.btn-danger {
    color: #fff;
    background-color: #2e9c8c;
    border-color: #17a2b8;
    font-size: 20px;
}