body {
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background: linear-gradient(111.4deg, rgb(238, 113, 113) 1%, rgb(246, 215, 148) 58%);
  background-size: cover;
}

.container {
  width: 100%;
  height: 100%;
  display: flex;
}

.left-box {
  width: 15rem;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(30px);
  position: relative;
  color: #fff;
  font-size: 14px;
  display: flex;
  flex-direction: column;
  transition: 0.5s ease;
  white-space: nowrap;
}

.left-box .ul {
  list-style: none;
  width: 90%;
  margin: 25px auto;
  flex: 1;
}

.left-box .li {
  height: 46px;
  display: flex;
  align-items: center;
  padding-left: 12px;
  border-radius: 10px;
  cursor: pointer;
  transition: 0.3s;
}

.ul a {
  text-decoration: none;
  color: #fff;
}

.left-box .li.active,
.left-box .li.active:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

.left-box .li:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.left-box hr {
  width: 90%;
  margin: 18px auto;
  border: none;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.right-box {
  flex: 1;
  position: relative;
  display: flex;
  flex-direction: column;
}

.right-box .top {
  margin: 25px 35px;
  display: flex;
  align-items: center;
  height: 46px;
}

.right-box .top .current-tag {
  flex: 1;
  color: #fff;
  font-weight: 600;
  cursor: default;
}

.right-box .middle {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  transform: translate(0, -10%);
  color: #222;
  font-size: 6vw;
  font-weight: bold;
  text-transform: uppercase;
}