spacedeck-open/styles/space-guides.scss

$guide-gutter: 50px !default;
#space-helpers {
    pointer-events:none;
    position:absolute;
    width:100%;
    height:100%;
    top:0;
    left:0;
    // display: none;

    .guides {
        position:absolute;
        height:100%;
        width: 100%;
        top:0;
        z-index: 5000;
        pointer-events: none !important;

        // compensate for border spacing
        // width: auto;
        // left: -50px;
        // right: -50px;

        table {
            width: 100%; // space width + (border spacing * 2)
            height:100%;
            position:absolute;
            table-layout: auto; 
            border-collapse: separate; 
            border-spacing: $guide-gutter 0px; 
            // border-collapse: collapse; 
            // border-spacing: 0px 0px; 

            .column td {
                border:1px solid rgba(40,140,215,0.6);;
                // background-color:rgba(40,140,215,0.125);
                &:first-child {
                   // border-left:1px solid #448afe;
                }
                // -webkit-box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.075), 0 0 10px rgba(255,255,255, 0.075);
            }

            .margin-top td,
            .margin-bottom td {
                // background-color:rgba(40,140,215,0.1);
                border-top:none;
                border-bottom:none;
                border-right:1px solid rgba(40,140,215,0.125);
                border-left:1px solid rgba(40,140,215,0.125);;
                height: $guide-gutter;
            }

            &.no-gutter .margin-top td:first-child,
            &.no-gutter .margin-bottom td:first-child {
                border-left:1px solid rgba(40,140,215,0.125);
            }

            &.no-gutter .column td,
            &.no-gutter .margin-top td,
            &.no-gutter .margin-bottom td{
                border-left:none;
            }
        }
    }
}