/* common css */

* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
  }
  
  a {
    text-decoration: none;
    color: #444;
  }
  
  html,
  body {
    height: 100%;
    width: 100%;
    font-family: Helvetica, Verdana, sans-serif;
    font-weight: 400;
    font-display: optional;
    color: #444;
  }
  
  .hide {
    display: none;
  }
  
  header {
    padding: 0 20px;
    width: 100%;
    height: 60px;
    position: fixed;
    top: 0;
    left: 0;
    background: #1976d2;
    z-index: 99;
  }
  
  .header-inner-wrapper {
    display: flex;
    width: 100%;
    height: 60px;
    line-height: 60px;
    color: #fff;
  }
  
  .header-left-logo {
    width: 100px;
    flex: none;
    text-align: left;
  }
  
  .header-mid-name {
    flex: 1;
    text-align: center;
  }
  
  .header-right {
    width: 100px;
    flex: none;
    text-align: right;
  }
  
  .sidebar {
    width: 70%;
    height: 100%;
    overflow: hidden;
    z-index: 1000;
    background: #fff;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    transition: left .5s;
  }
  
  .sidebar-header {
    height: 150px;
    background: #1976d2;
    color: #fff;
    font-size: 24px;
    text-align: center;
    line-height: 180px;
  }
  
  .sidebar-main.li {
    height: 60px;
    line-height: 60px;
    border-bottom: solid 1px #eee;
  }
  
  a {
    margin-left: 20px;
  }
  
  i {
    margin-right: 20px;
  }
  
  span {
    display: inline-block;
    height: 60px;
    line-height: 60px;
  }
  
  .sidebar.hide {
    display: block;
    left: -70%;
  }
  
  .main {
    margin: 0 auto;
  }
  
  .content {
    padding: 20px;
  }
  
  .skeleton {
    position: absolute;
    top: 150px;
    left: 50%;
    width: 200px;
    margin-left: -100px;
    background: #ccc;
    height: 50px;
    color: #eee;
    line-height: 50px;
  }
  
  .mask {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, .5);
    z-index: 500;
    transition: opacity .5s
  }
  
  
  /* lds-ring, borrowed from https://loading.io/css/ */
  .lds-ring {
    display: inline-block;
    position: relative;
    width: 64px;
    height: 64px;
  }
  
  .lds-ring div {
    box-sizing: border-box;
    display: block;
    position: absolute;
    width: 51px;
    height: 51px;
    margin: 6px;
    border: 6px solid #444;
    border-radius: 50%;
    animation: lds-ring 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
    border-color: #444 transparent transparent transparent;
  }
  
  .lds-ring div:nth-child(1) {
    animation-delay: -0.45s;
  }
  
  .lds-ring div:nth-child(2) {
    animation-delay: -0.3s;
  }
  
  .lds-ring div:nth-child(3) {
    animation-delay: -0.15s;
  }
  
  @keyframes lds-ring {
    0% {
      transform: rotate(0deg);
    }
  
    100% {
      transform: rotate(360deg);
    }
  }
  
  .content h2 {
    color: #681dd7;
    margin: 20px 0px;
  }
  
  .disabled {
    background-color: #757575;
  }
  
  button {
    background-color: #681dd7;
    color: #fff;
    border: none;
    padding: 10px;
    margin-bottom: 20px;
  }