antd-mobile/2x/cjs/components/notice-bar/notice-bar.css

<img src="https://gw.alipayobjects.com/mdn/rms_ee68a8/afts/img/A*hjjDS5Yy-ooAAAAAAAAAAAAAARQnAQ" alt="logo" width="100%" />

.adm-notice-bar {
  --background-color: #ababab;
  --border-color: #999999;
  --text-color: #ffffff;
  --font-size: 30px;
  --icon-font-size: 36px;
  --height: 76px;
  height: var(--height);
  box-sizing: border-box;
  font-size: var(--font-size);
  line-height: var(--height);
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: solid 2px var(--border-color);
  border-left: none;
  border-right: none;
  background-color: var(--background-color);
  color: var(--text-color);
}

.adm-notice-bar > span[role='img'] {
  color: var(--text-color);
}

.adm-notice-bar.adm-notice-bar-alert {
  --background-color: #fff9ed;
  --border-color: #fff3e9;
  --text-color: #ff6010;
}

.adm-notice-bar.adm-notice-bar-error {
  --background-color: #ff3b30;
  --border-color: #d9281e;
  --text-color: #ffffff;
}

.adm-notice-bar.adm-notice-bar-info {
  --background-color: #d0e4ff;
  --border-color: #bcd8ff;
  --text-color: #1677ff;
}

.adm-notice-bar .adm-notice-bar-left {
  flex-shrink: 0;
  margin-right: 16px;
  font-size: var(--icon-font-size);
  line-height: var(--height);
}

.adm-notice-bar .adm-notice-bar-content {
  flex: 1;
  overflow: hidden;
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

.adm-notice-bar .adm-notice-bar-content .adm-notice-bar-content-inner {
  width: auto;
  transition-timing-function: linear;
  position: absolute;
  white-space: nowrap;
}

.adm-notice-bar .adm-notice-bar-right {
  flex-shrink: 0;
  margin-left: 24px;
}

.adm-notice-bar-close-icon {
  font-size: 36px;
}