body {
  font-family: sans-serif;
  padding-top: 50px;
}
.content {
  height: 100%;
  width: 99%;
  border: solid #0099ff;
  border-radius: 10px;
  padding: 1px;
  margin-left: 3px;
  margin-right: 3px;
}
.header {
  color: #0099ff;
}
.Topbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 50px;
  background-color: #0099ff;
  color: #ffffff;
  border-bottom-left-radius: 10px;
  border-bottom-right-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.Topbar-inner {
  width: 95%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.Topbar-logo img {
  height: 40px;
  margin-right: 10px;
}

.Topbar-links a {
  color: white;
  text-decoration: none;
  margin: 0 6px;
  font-size: 16px;
}

.Topbar-menu-btn {
  display: none;
  font-size: 26px;
  cursor: pointer;
  user-select: none;
}

.Topbar-dropdown {
  display: none;
  flex-direction: column;
  background-color: #0099ff;
  width: 100%;
  padding-bottom: 10px;
  border-bottom-left-radius: 10px;
  border-bottom-right-radius: 10px;
}

.Topbar-dropdown a {
  color: white;
  text-decoration: none;
  padding: 8px 20px;
  font-size: 18px;
}
.Topbar-links h1 {
  font-size: 20px;
  margin: 0;
  padding: 0;
}
/* Responsive mode */
@media (max-width: 700px) {
  .Topbar-links {
    display: none;
  }
  .Topbar-menu-btn {
    display: block;
  }
}
.links {
  color: #0099ff;
  text-decoration: none;
}
.error {
  color: #d00;
  font-weight: bold;
  margin-bottom: 10px;
}