.GridToolTip_Default {
    display: none !important;
}

.TelerikModalOverlay {
    width: 99.9% !important;
    height: 100% !important;
    overflow: hidden !important;
}

/* remove main borders(Lightweight Render) */
.borderLessDialog.RadWindow {
    border: none;
    padding: 0;
}

/* both selectors below can be replaced with setting VisibleTitlebar="false" */
/* remove the titlebar widening */
.borderLessDialog.RadWindow .rwTitleBar {
    margin: 0;
}

/* remove the titlebar */
.borderLessDialog .rwTitleBar {
    display: none;
}

/* the selector below can be replaced with setting VisibleStatusbar="false" */
/* remove the statusbar */
.borderLessDialog .rwStatusBar {
    display: none;
}

/* remove the border around the content */
.borderLessDialog.RadWindow .rwContent {
    border: none;
}