FreeDATA/gui/src/styles.css

         /**  
         * disable scrolling in main window
         */ 
         body { 
         padding-right: 0px !important;
         overflow-y: hidden !important;
         }
         /**
         * Progress bars with centered text
         */
         .progress {
         position: relative;
         }
         .progress span {
         position: absolute;
         display: block;
         width: 100%;
         color: black;
         }



/* The sidebar menu */
/* https://www.w3schools.com/howto/howto_js_collapse_sidebar.asp*/
.sidebar {
  height: 100%; /* 100% Full-height */
  width: 0; /* 0 width - change this with JavaScript */
  position: fixed; /* Stay in place */
  z-index: 100; /* Stay on top */
  top: 0;
  /*left: 1220px;*/
  right: 0;
  background-color: #fff; /* White*/
  overflow-x: hidden; /* Disable horizontal scroll */
  padding-top: 60px; /* Place content 60px from the top */
  transition: 0.5s; /* 0.5 second transition effect to slide in the sidebar */
}