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

body {
  font-family: 'Helvetica Neue', Helvetica, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
  background-color: #f5f5f5;
}

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

.el-container {
  min-height: 100vh;
}

.el-header {
  background-color: #fff;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
  padding: 0 20px;
}

.el-main {
  background-color: #f5f5f5;
  padding: 20px;
}

.el-footer {
  background-color: #fff;
  text-align: center;
  padding: 20px;
  color: #999;
}