style.css

html {
  margin: 0px;
  padding: 0px;
  overflow: hidden;
}

body {
  margin: 0px;
  padding: 0px;
}

::-webkit-scrollbar-thumb {
  display: none;
}

input[type="checkbox"]:disabled
{
  opacity: .3;
}

div#content {
  background-color: #dddddd;
  margin: 0px;
  padding: 0px;
}

div#inner-content {
  background-color: #dddddd;
  margin: 10px;
  width: 100%;
  height: 100%;
}

.top-titlebar {
  position: absolute;
  left: 0px;
  top: 0px;
  width: 100%;
  height: 60px;
  background-color: #7a7c7c;
  -webkit-user-select: none;
  -webkit-app-region: drag;
}

.top-titlebar-icon {
  position: absolute;
  left: 6px;
  margin-top: 6px;
  margin-bottom: 6px;
}

.top-titlebar-text {
  position: absolute;
  left: 60px;
  width: 80%;
  margin-top: 20px;
  margin-bottom: 20px;
  font-family: Arial;
  font-size: 11pt;
  color: #ffffff;
}

.top-titlebar-close-button {
  position: absolute;
  right: 11px;
  width: 17px;
  height: 17px;
  margin-top: 6px;
  margin-bottom: 6px;
  -webkit-app-region: no-drag;
}

.top-titlebar-divider {
  position: absolute;
  left: 0px;
  top: 60px;
  width: 100%;
  height: 1px;
  background-color: #2a2c2c;
}