source: public/vendors/dataTable/Buttons-1.6.1/css/mixins.scss

@mixin dtb-two-stop-gradient($fromColor, $toColor) {
        background-color: $toColor; /* Fallback */
        background-image: -webkit-linear-gradient(top, $fromColor 0%, $toColor 100%); /* Chrome 10+, Saf5.1+, iOS 5+ */
        background-image:    -moz-linear-gradient(top, $fromColor 0%, $toColor 100%); /* FF3.6 */
        background-image:     -ms-linear-gradient(top, $fromColor 0%, $toColor 100%); /* IE10 */
        background-image:      -o-linear-gradient(top, $fromColor 0%, $toColor 100%); /* Opera 11.10+ */
        background-image:         linear-gradient(to bottom, $fromColor 0%, $toColor 100%);
        filter: progid:DXImageTransform.Microsoft.gradient(GradientType=0,StartColorStr='#{nth( $fromColor, 1 )}', EndColorStr='#{nth( $toColor, 1 )}');
}

@mixin dtb-radial-gradient ($fromColor, $toColor ) {
        background: $toColor; /* Fallback */
        background:     -ms-radial-gradient(center, ellipse farthest-corner, $fromColor 0%, $toColor 100%); /* IE10 Consumer Preview */ 
        background:    -moz-radial-gradient(center, ellipse farthest-corner, $fromColor 0%, $toColor 100%); /* Firefox */ 
        background:      -o-radial-gradient(center, ellipse farthest-corner, $fromColor 0%, $toColor 100%); /* Opera */ 
        background: -webkit-gradient(radial, center center, 0, center center, 497, color-stop(0, $fromColor), color-stop(1, $toColor)); /* Webkit (Safari/Chrome 10) */ 
        background: -webkit-radial-gradient(center, ellipse farthest-corner, $fromColor 0%, $toColor 100%); /* Webkit (Chrome 11+) */ 
        background: radial-gradient(ellipse farthest-corner at center, $fromColor 0%, $toColor 100%); /* W3C Markup, IE10 Release Preview */ 
}


@mixin dtb-fixed-collection {
        // Fixed positioning feature
        &.fixed {
                position: fixed;
                top: 50%;
                left: 50%;
                margin-left: -75px;
                border-radius: 0;

                &.two-column {
                        margin-left: -200px;
                }

                &.three-column {
                        margin-left: -225px;
                }

                &.four-column {
                        margin-left: -300px;
                }
        }

        > :last-child {
                > * {
                        -webkit-column-break-inside: avoid;
                        break-inside: avoid;
                }

                // Multi-column layout feature
                display: block !important;
                -webkit-column-gap: 8px;
                -moz-column-gap: 8px;
                        -ms-column-gap: 8px;
                        -o-column-gap: 8px;
                column-gap: 8px;
        }

        &.two-column {
                width: 400px;

                > :last-child {
                        padding-bottom: 1px;

                        -webkit-column-count: 2;
                                -moz-column-count: 2;
                                -ms-column-count: 2;
                                        -o-column-count: 2;
                        column-count: 2;
                }
        }

        &.three-column {
                width: 450px;

                > :last-child {
                        padding-bottom: 1px;

                        -webkit-column-count: 3;
                                -moz-column-count: 3;
                                -ms-column-count: 3;
                                        -o-column-count: 3;
                        column-count: 3;
                }
        }

        &.four-column {
                width: 600px;

                > :last-child {
                        padding-bottom: 1px;

                        -webkit-column-count: 4;
                                -moz-column-count: 4;
                                -ms-column-count: 4;
                                        -o-column-count: 4;
                        column-count: 4;
                }
        }

        // Chrome fix - 531528
        .dt-button {
                border-radius: 0;
        }
}


@mixin dtb-processing {
        color: rgba(0, 0, 0, 0.2);

        &:after {
                position: absolute;
            top: 50%;
                left: 50%;
                width: 16px;
                height: 16px;
                margin: -8px 0 0 -8px;
                box-sizing: border-box;

                display: block;
                content: ' ';
                border: 2px solid rgb(40,40,40);
                border-radius: 50%;
                border-left-color: transparent;
                border-right-color: transparent;
                animation: dtb-spinner 1500ms infinite linear;
                        -o-animation: dtb-spinner 1500ms infinite linear;
                        -ms-animation: dtb-spinner 1500ms infinite linear;
                        -webkit-animation: dtb-spinner 1500ms infinite linear;
                        -moz-animation: dtb-spinner 1500ms infinite linear;
        }
}

@keyframes dtb-spinner {
        100%{ transform: rotate(360deg); }
}

@-o-keyframes dtb-spinner {
        100%{ -o-transform: rotate(360deg); transform: rotate(360deg); }
}

@-ms-keyframes dtb-spinner {
        100%{ -ms-transform: rotate(360deg); transform: rotate(360deg); }
}

@-webkit-keyframes dtb-spinner {
        100%{ -webkit-transform: rotate(360deg); transform: rotate(360deg); }
}

@-moz-keyframes dtb-spinner {
        100%{ -moz-transform: rotate(360deg); transform: rotate(360deg); }
}