/* CSS Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  font-family: 'Helvetica Neue', Helvetica, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: #333;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  text-decoration: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  color: inherit;
  outline: none;
}

img {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
  border-style: none;
}

/* 清除浮动 */
.clearfix:after {
  content: "";
  display: table;
  clear: both;
}

/* 全局过渡效果 */
.fade-enter-active, .fade-leave-active {
  transition: opacity 0.3s;
}
.fade-enter, .fade-leave-to {
  opacity: 0;
}

/* 响应式断点辅助类 */
.hidden-xs-only {
  @media (max-width: 767px) {
    display: none !important;
  }
}

.hidden-sm-only {
  @media (min-width: 768px) and (max-width: 991px) {
    display: none !important;
  }
}

.hidden-md-only {
  @media (min-width: 992px) and (max-width: 1199px) {
    display: none !important;
  }
}

.hidden-lg-only {
  @media (min-width: 1200px) and (max-width: 1919px) {
    display: none !important;
  }
}

.hidden-xl-only {
  @media (min-width: 1920px) {
    display: none !important;
  }
}