body {
  background: #ffffff;
  background: linear-gradient(
    0deg,
    rgba(252, 252, 227, 1) 0%,
    rgba(252, 232, 101, 1) 37%,
    rgba(255, 216, 87, 1) 57%,
    rgba(255, 185, 99, 1) 75%,
    rgba(255, 224, 122, 1) 100%
  );
  height: auto;
  color: #ff5100;
  font-family: "Arial", "Microsoft YaHei", "黑体", "宋体", sans-serif;
  position: relative;
}


h3 {
  color: #5f8e1d;
  font-weight: bold;
}

#btn-back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: none;
  z-index: 1000;
}

#footer {
     border-top: 1px solid #099a28;
}

#nav {
  background-color: #ffdd78 !important;
}

.navbar-nav .nav-item .nav-link {
  color: #531a00;
  text-transform: uppercase;
}

.notice {
  background-color: #14c0f3; color: #0c3b71;
}

.content {
  background-color: #feffaf; border-top: 5px solid #c4db5d
}