:root {
  --global-background-color: #020042; /* 全局背景色 */
  --container-background-color: #020046; /* 容器背景色 */
  --container-border-color: #0d53b7; /* 容器边框色 */
  --container-shadow-color: #0930A9; /* 容器阴影色 */
  --corner-background-color: #0E5FFF; /* 容器角标色 */
  --card-background-color: #041755; /* 卡片背景色 */
  --card-background-select-color: #00c8d654; /* 卡片背景色 */
  --card-border1-color: #3673A3; /* 卡片边框色1 */
  --card-border2-color: #19EBFF; /* 卡片边框色2 */
  --white-text-color: white; /* 白色文本 */
  --lightblue-text-color: #75FEFF; /* 亮蓝色文本 */
  --darkblue-text-color: #47AAFF; /* 深蓝色文本 */
  --lightyellow-text-color: #FEE165; /* 亮黄色文本 */
}

.page {
  height: 100%;
  width: 100%;
  background-color: var(--global-background-color);
  background-size: 100% 100%
}

.head {
  height: 10%;
  width: 100%;
  background-repeat: no-repeat;
  background-position: center;
  background-image: url(./img/demo_top.png);
  background-size: cover;
}

.head span {
  margin-left: 1rem;
  color: var(--lightblue-text-color);
  font-size: 20px;
  /*font-family: AlimamaShuHeiTi, serif;*/
  font-weight: bold;
  letter-spacing: 2px;
}

#top_title {
  background-repeat: no-repeat;
  background-position: center;
  background-image: url(./img/top_title_2x.png);
  height: 100%;
  background-size: 16% 48%;
}

.text_left {
  height: 50%;
  width: 25%;
  float: left;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  white-space: nowrap;
}

.text_right {
  height: 50%;
  width: 25%;
  float: right;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  white-space: nowrap;
}

.middle {
  height: 49%;
  justify-content: space-around;
  display: flex;
  padding: 1rem;
}

.content {
  float: left;
}

.trade_left {
  width: 25%;
}

.trade_middle {
  width: 45%;
}

.trade_right {
  width: 25%;
}


