src/jquery.gridster.css
.gridster {
    position:relative;
}

.gridster > * {
    margin: 0 auto;
    -webkit-transition: height .4s, width .4s;
    -moz-transition: height .4s, width .4s;
    -o-transition: height .4s, width .4s;
    -ms-transition: height .4s, width .4s;
    transition: height .4s, width .4s;
}

.gridster .gs-w {
    z-index: 2;
    position: absolute;
}

.ready .gs-w:not(.preview-holder) {
    -webkit-transition: opacity .3s, left .3s, top .3s;
    -moz-transition: opacity .3s, left .3s, top .3s;
    -o-transition: opacity .3s, left .3s, top .3s;
    transition: opacity .3s, left .3s, top .3s;
}

.ready .gs-w:not(.preview-holder),
.ready .resize-preview-holder {
    -webkit-transition: opacity .3s, left .3s, top .3s, width .3s, height .3s;
    -moz-transition: opacity .3s, left .3s, top .3s, width .3s, height .3s;
    -o-transition: opacity .3s, left .3s, top .3s, width .3s, height .3s;
    transition: opacity .3s, left .3s, top .3s, width .3s, height .3s;
}

.gridster .preview-holder {
    z-index: 1;
    position: absolute;
    background-color: #fff;
    border-color: #fff;
    opacity: 0.3;
}

.gridster .player-revert {
    z-index: 10!important;
    -webkit-transition: left .3s, top .3s!important;
    -moz-transition: left .3s, top .3s!important;
    -o-transition: left .3s, top .3s!important;
    transition:  left .3s, top .3s!important;
}

.gridster .dragging,
.gridster .resizing {
    z-index: 10!important;
    -webkit-transition: all 0s !important;
    -moz-transition: all 0s !important;
    -o-transition: all 0s !important;
    transition: all 0s !important;
}


.gs-resize-handle {
    position: absolute;
    z-index: 1;
}

.gs-resize-handle-both {
    width: 20px;
    height: 20px;
    bottom: -8px;
    right: -8px;
    background-image: url('data:image/svg+xml;base64,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');
    background-position: top left;
    background-repeat: no-repeat;
    cursor: se-resize;
    z-index: 20;
}

.gs-resize-handle-x {
    top: 0;
    bottom: 13px;
    right: -5px;
    width: 10px;
    cursor: e-resize;
}

.gs-resize-handle-y {
    left: 0;
    right: 13px;
    bottom: -5px;
    height: 10px;
    cursor: s-resize;
}

.gs-w:hover .gs-resize-handle,
.resizing .gs-resize-handle {
    opacity: 1;
}

.gs-resize-handle,
.gs-w.dragging .gs-resize-handle {
    opacity: 0;
}

.gs-resize-disabled .gs-resize-handle {
    display: none!important;
}

[data-max-sizex="1"] .gs-resize-handle-x,
[data-max-sizey="1"] .gs-resize-handle-y,
[data-max-sizey="1"][data-max-sizex="1"] .gs-resize-handle {
    display: none !important;
}

/* Uncomment this if you set helper : "clone" in draggable options */
/*.gridster .player {
  opacity:0;
}
*/