* {
  box-sizing: border-box;
  color: #212529;
  margin: 0;
  padding: 0;
}

body {
  background-image: url(../img/bz.png);
  background-size: cover;
}
#app {
  width: 100vw;
  height: 100vh;
  overflow: auto;
}
#app::-webkit-scrollbar {
  width: 10px;
  height: 5px;
}
#app::-webkit-scrollbar-track {
  background: rgb(239, 239, 239);
  border-radius: 2px;
}
#app::-webkit-scrollbar-thumb {
  background: #bfbfbf;
  border-radius: 10px;
}

.nav_top, .nav-top {
  background-color: rgba(255, 255, 255, 0.6);
  width: 100%;
}
.nav_title, .nav-title {
  margin: 22px 40px;
  width: 100px;
}

.content {
  margin-top: 20px;
  margin-bottom: 40px;
  width: 50%;
  flex-wrap: wrap;
}

/* 每一个导航 */
.content-item {
  width: 140px;
  height: 140px;
  margin: 10px;
  position: relative;
  border-radius: 10px;
  display: flex;
  align-items: center;
  flex-direction: column;
  justify-content: center;
  cursor: pointer;
}
.content-item::before {
  content: '';
  background-color: rgba(234, 234, 234, 0.5);
  backdrop-filter: blur(10px);
  z-index: -1;
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 10px;
}

.content-item-img {
  width: 110px;
  height: 110px;
  transition: all 0.3s;
}
.content-item-text {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  line-height: 20px;
  height: 20px;
  transition: all 0.3s;
}
.content-item:hover {
  img {
    transform: scale(1.2);
  }
  div {
    transform: scale(0.8);
  }
}

@media (min-width: 280px) and (max-width: 480px) {
  body {
    background-color: bisque;
    background-image: none;
    overflow: auto;
  }
  .content {
    width: 100%;
    padding: 8px;
    backdrop-filter: none;
  }
}

@media (min-width: 480px) and (max-width: 768px) {
  body {
    background-color: bisque;
    background-image: none;
    overflow: auto;
  }
  .content {
    width: 100%;
    padding: 8px;
    backdrop-filter: none;
  }
}

@media (min-width: 768px) and (max-width: 1024px) {
  body {
    overflow: auto;
  }
  .content {
    width: 100%;
    padding: 8px;
    backdrop-filter: none;
  }
}

@media (min-width: 1024px) and (max-width: 1280px) {
  body {
    overflow: auto;
  }
  .content {
    width: 80%;
    padding: 8px;
    backdrop-filter: none;
  }
}