.scrollbar {
    width: 100%;
    overflow-x: scroll !important;
    border-bottom: 1px solid grey; /*[1px solid {diagnostics-host-swimlane-border}]*/
    z-index: 115;
    transition: opacity .5s ease-in-out;
    opacity: 0;
}

body:hover .scrollbar {
    transition: opacity .5s ease-in-out;
    opacity: 1;
}

.scrollbar .scrollbar-width-calculator {
    position: relative;
    height: 1px;
    width: 1px;
}