gridstack.js/src/gridstack.scss

/**
 * Create vendor-prefixed CSS in one go, e.g.
 *
   `@include vendor(border-radius, 4px);`
 *
 */
@mixin vendor($property, $value...){
    -webkit-#{$property}:$value;
       -moz-#{$property}:$value;
        -ms-#{$property}:$value;
         -o-#{$property}:$value;
            #{$property}:$value;
}

:root .grid-stack-item > .ui-resizable-handle { filter: none; }

.grid-stack {
    position: relative;
    
    .grid-stack-item {
        min-width: 8.33333333%;
        position: absolute;
        padding: 0;
        
        > .grid-stack-item-content,
        > .placeholder-content {
            margin: 0;
            position: absolute;
            top: 0;
            left: 10px;
            right: 10px;
            bottom: 0;
            width: auto;
            z-index: 0 !important;
            overflow: auto;
        }
        
        > .ui-resizable-handle {
            position: absolute;
            font-size: 0.1px;
            display: block;
            -ms-touch-action: none;
            touch-action: none;
        }
        
        &.ui-resizable-disabled > .ui-resizable-handle,
        &.ui-resizable-autohide > .ui-resizable-handle { display: none; }
        
        &.ui-draggable-dragging,
        &.ui-resizable-resizing {
            z-index: 100;
            
            > .grid-stack-item-content,
            > .grid-stack-item-content {
                box-shadow: 1px 4px 6px rgba(0, 0, 0, 0.2);
                opacity: 0.8;
            }
        }
        
        > .ui-resizable-se,
        > .ui-resizable-sw {
            text-align: right;
            color: gray;

            padding: 2px 3px 0 0;
            margin: 0;

            font: normal normal normal 10px/1 FontAwesome;
            font-size: inherit;
            text-rendering: auto;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            
            &::before { content: "\f065"; }
        }
        
        > .ui-resizable-se {
            display: inline-block;
            filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=1);
            @include vendor(transform, rotate(90deg));
        }
        
        /** Uncomment this to show bottom-left resize handle **/
        /*
        > .ui-resizable-sw {
            display: inline-block;
            filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=3);
            @include vendor(transform, rotate(180deg));
        }
        */
        
        > .ui-resizable-nw { cursor: nw-resize; width: 20px; height: 20px; left: 10px; top: 0; }
        > .ui-resizable-n  { cursor: n-resize;  height: 10px; top: 0; left: 25px; right: 25px; }
        > .ui-resizable-ne { cursor: ne-resize; width: 20px; height: 20px; right: 10px; top: 0; }
        > .ui-resizable-e  { cursor: e-resize;  width: 10px; right: 10px; top: 15px; bottom: 15px; }
        > .ui-resizable-se { cursor: se-resize; width: 20px; height: 20px; right: 10px; bottom: 0; }
        > .ui-resizable-s  { cursor: s-resize;  height: 10px; left: 25px; bottom: 0; right: 25px; }
        > .ui-resizable-sw { cursor: sw-resize; width: 20px; height: 20px; left: 10px; bottom: 0; }
        > .ui-resizable-w  { cursor: w-resize;  width: 10px; left: 10px; top: 15px; bottom: 15px; }
        
        /**
         * Update grid by changing $gridstack-columns only
         */
        $gridstack-columns: 12;

        @for $i from 1 through $gridstack-columns {
            &[data-gs-width='#{$i}'] { width: (100% / $gridstack-columns) * $i; }
            &[data-gs-x='#{$i}'] { left: (100% / $gridstack-columns) * $i; }
            &[data-gs-min-width='#{$i}'] { min-width: (100% / $gridstack-columns) * $i; }
            &[data-gs-max-width='#{$i}'] { max-width: (100% / $gridstack-columns) * $i; }
        }
    }
    
    &.grid-stack-animate, 
    &.grid-stack-animate .grid-stack-item {
        @include vendor(transition, 'left .3s, top .3s, height .3s, width .3s');
    }

    /*Don't animate the placeholder or when dragging/resizing*/
    &.grid-stack-animate .grid-stack-item.ui-draggable-dragging,
    &.grid-stack-animate .grid-stack-item.ui-resizable-resizing,
    &.grid-stack-animate .grid-stack-item.grid-stack-placeholder{
        @include vendor(transition, 'left .0s, top .0s, height .0s, width .0s');
    }
}


@media (max-width: 768px) {
    .grid-stack-item {
        position: relative !important;
        width: auto !important;
        left: 0 !important;
        top: auto !important;
        margin-bottom: 20px;
        
        .ui-resizable-handle { display: none; }
    }

    .grid-stack { height: auto !important; }
}