添加工作流 设计器

src/components/bpmnProcessDesigner/package/designer/ProcessViewer.vue

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+<template>
+  <div class="my-process-designer">
+    <div class="my-process-designer__container">
+      <div class="my-process-designer__canvas" style="height: 760px" ref="bpmnCanvas"></div>
+    </div>
+  </div>
+</template>
+
+<script lang="ts" setup>
+import BpmnViewer from 'bpmn-js/lib/Viewer'
+import DefaultEmptyXML from './plugins/defaultEmpty'
+// import { DICT_TYPE, getIntDictOptions } from '@/utils/dict'
+// import { formatDate } from '@/utils/formatTime'
+// import { isEmpty } from '@/utils/is'
+
+defineOptions({ name: 'MyProcessViewer' })
+
+const props = defineProps({
+  value: {
+    // BPMN XML 字符串
+    type: String,
+    default: ''
+  },
+  prefix: {
+    // 使用哪个引擎
+    type: String,
+    default: 'camunda'
+  },
+  activityData: {
+    // 活动的数据。传递时，可高亮流程
+    type: Array,
+    default: () => []
+  },
+  processInstanceData: {
+    // 流程实例的数据。传递时，可展示流程发起人等信息
+    type: Object,
+    default: () => {}
+  },
+  taskData: {
+    // 任务实例的数据。传递时，可展示 UserTask 审核相关的信息
+    type: Array,
+    default: () => []
+  }
+})
+
+provide('configGlobal', props)
+
+const emit = defineEmits(['destroy'])
+
+let bpmnModeler
+
+const xml = ref('')
+const activityLists = ref<any[]>([])
+const processInstance = ref<any>(undefined)
+const taskList = ref<any[]>([])
+const bpmnCanvas = ref()
+// const element = ref()
+const elementOverlayIds = ref<any>(null)
+const overlays = ref<any>(null)
+
+const initBpmnModeler = () => {
+  if (bpmnModeler) return
+  bpmnModeler = new BpmnViewer({
+    container: bpmnCanvas.value,
+    bpmnRenderer: {}
+  })
+}
+
+/* 创建新的流程图 */
+const createNewDiagram = async (xml) => {
+  // 将字符串转换成图显示出来
+  let newId = `Process_${new Date().getTime()}`
+  let newName = `业务流程_${new Date().getTime()}`
+  let xmlString = xml || DefaultEmptyXML(newId, newName, props.prefix)
+  try {
+    let { warnings } = await bpmnModeler.importXML(xmlString)
+    if (warnings && warnings.length) {
+      warnings.forEach((warn) => console.warn(warn))
+    }
+    // 高亮流程图
+    await highlightDiagram()
+    const canvas = bpmnModeler.get('canvas')
+    canvas.zoom('fit-viewport', 'auto')
+  } catch (e) {
+    console.error(e)
+    // console.error(`[Process Designer Warn]: ${e?.message || e}`);
+  }
+}
+
+/* 高亮流程图 */
+// TODO 芋艿：如果多个 endActivity 的话，目前的逻辑可能有一定的问题。https://www.jdon.com/workflow/multi-events.html
+const highlightDiagram = async () => {
+  const activityList = activityLists.value
+  if (activityList.length === 0) {
+    return
+  }
+  // 参考自 https://gitee.com/tony2y/RuoYi-flowable/blob/master/ruoyi-ui/src/components/Process/index.vue#L222 实现
+  // 再次基础上，增加不同审批结果的颜色等等
+  let canvas = bpmnModeler.get('canvas')
+  let todoActivity: any = activityList.find((m: any) => !m.endTime) // 找到待办的任务
+  let endActivity: any = activityList[activityList.length - 1] // 获得最后一个任务
+  let findProcessTask = false //是否已经高亮了进行中的任务
+  //进行中高亮之后的任务 key 集合，用于过滤掉 taskList 进行中后面的任务，避免进行中后面的数据 Hover 还有数据
+  let removeTaskDefinitionKeyList = []
+  // debugger
+  bpmnModeler.getDefinitions().rootElements[0].flowElements?.forEach((n: any) => {
+    let activity: any = activityList.find((m: any) => m.key === n.id) // 找到对应的活动
+    if (!activity) {
+      return
+    }
+    if (n.$type === 'bpmn:UserTask') {
+      // 用户任务
+      // 处理用户任务的高亮
+      const task: any = taskList.value.find((m: any) => m.id === activity.taskId) // 找到活动对应的 taskId
+      if (!task) {
+        return
+      }
+      // 进行中的任务已经高亮过了，则不高亮后面的任务了
+      if (findProcessTask) {
+        removeTaskDefinitionKeyList.push(n.id)
+        return
+      }
+      // 高亮任务
+      canvas.addMarker(n.id, getResultCss(task.status))
+      //标记是否高亮了进行中任务
+      if (task.status === 1) {
+        findProcessTask = true
+      }
+      // 如果非通过，就不走后面的线条了
+      if (task.status !== 2) {
+        return
+      }
+      // 处理 outgoing 出线
+      const outgoing = getActivityOutgoing(activity)
+      outgoing?.forEach((nn: any) => {
+        // debugger
+        let targetActivity: any = activityList.find((m: any) => m.key === nn.targetRef.id)
+        // 如果目标活动存在，则根据该活动是否结束，进行【bpmn:SequenceFlow】连线的高亮设置
+        if (targetActivity) {
+          canvas.addMarker(nn.id, targetActivity.endTime ? 'highlight' : 'highlight-todo')
+        } else if (nn.targetRef.$type === 'bpmn:ExclusiveGateway') {
+          // TODO 芋艿：这个流程，暂时没走到过
+          canvas.addMarker(nn.id, activity.endTime ? 'highlight' : 'highlight-todo')
+          canvas.addMarker(nn.targetRef.id, activity.endTime ? 'highlight' : 'highlight-todo')
+        } else if (nn.targetRef.$type === 'bpmn:EndEvent') {
+          // TODO 芋艿：这个流程，暂时没走到过
+          if (!todoActivity && endActivity.key === n.id) {
+            canvas.addMarker(nn.id, 'highlight')
+            canvas.addMarker(nn.targetRef.id, 'highlight')
+          }
+          if (!activity.endTime) {
+            canvas.addMarker(nn.id, 'highlight-todo')
+            canvas.addMarker(nn.targetRef.id, 'highlight-todo')
+          }
+        }
+      })
+    } else if (n.$type === 'bpmn:ExclusiveGateway') {
+      // 排它网关
+      // 设置【bpmn:ExclusiveGateway】排它网关的高亮
+      canvas.addMarker(n.id, getActivityHighlightCss(activity))
+      // 查找需要高亮的连线
+      let matchNN: any = undefined
+      let matchActivity: any = undefined
+      n.outgoing?.forEach((nn: any) => {
+        let targetActivity = activityList.find((m: any) => m.key === nn.targetRef.id)
+        if (!targetActivity) {
+          return
+        }
+        // 特殊判断 endEvent 类型的原因，ExclusiveGateway 可能后续连有 2 个路径：
+        //  1. 一个是 UserTask => EndEvent
+        //  2. 一个是 EndEvent
+        // 在选择路径 1 时，其实 EndEvent 可能也存在，导致 1 和 2 都高亮，显然是不正确的。
+        // 所以，在 matchActivity 为 EndEvent 时，需要进行覆盖~~
+        if (!matchActivity || matchActivity.type === 'endEvent') {
+          matchNN = nn
+          matchActivity = targetActivity
+        }
+      })
+      if (matchNN && matchActivity) {
+        canvas.addMarker(matchNN.id, getActivityHighlightCss(matchActivity))
+      }
+    } else if (n.$type === 'bpmn:ParallelGateway') {
+      // 并行网关
+      // 设置【bpmn:ParallelGateway】并行网关的高亮
+      canvas.addMarker(n.id, getActivityHighlightCss(activity))
+      n.outgoing?.forEach((nn: any) => {
+        // 获得连线是否有指向目标。如果有，则进行高亮
+        const targetActivity = activityList.find((m: any) => m.key === nn.targetRef.id)
+        if (targetActivity) {
+          canvas.addMarker(nn.id, getActivityHighlightCss(targetActivity)) // 高亮【bpmn:SequenceFlow】连线
+          // 高亮【...】目标。其中 ... 可以是 bpm:UserTask、也可以是其它的。当然，如果是 bpm:UserTask 的话，其实不做高亮也没问题，因为上面有逻辑做了这块。
+          canvas.addMarker(nn.targetRef.id, getActivityHighlightCss(targetActivity))
+        }
+      })
+    } else if (n.$type === 'bpmn:StartEvent') {
+      // 开始节点
+      canvas.addMarker(n.id, 'highlight')
+      n.outgoing?.forEach((nn) => {
+        // outgoing 例如说【bpmn:SequenceFlow】连线
+        // 获得连线是否有指向目标。如果有，则进行高亮
+        let targetActivity = activityList.find((m: any) => m.key === nn.targetRef.id)
+        if (targetActivity) {
+          canvas.addMarker(nn.id, 'highlight') // 高亮【bpmn:SequenceFlow】连线
+          canvas.addMarker(n.id, 'highlight') // 高亮【bpmn:StartEvent】开始节点（自己）
+        }
+      })
+    } else if (n.$type === 'bpmn:EndEvent') {
+      // 结束节点
+      if (!processInstance.value || processInstance.value.status === 1) {
+        return
+      }
+      canvas.addMarker(n.id, getResultCss(processInstance.value.status))
+    } else if (n.$type === 'bpmn:ServiceTask') {
+      //服务任务
+      if (activity.startTime > 0 && activity.endTime === 0) {
+        //进入执行，标识进行色
+        canvas.addMarker(n.id, getResultCss(1))
+      }
+      if (activity.endTime > 0) {
+        // 执行完成，节点标识完成色, 所有outgoing标识完成色。
+        canvas.addMarker(n.id, getResultCss(2))
+        const outgoing = getActivityOutgoing(activity)
+        outgoing?.forEach((out) => {
+          canvas.addMarker(out.id, getResultCss(2))
+        })
+      }
+    } else if (n.$type === 'bpmn:SequenceFlow') {
+      let targetActivity = activityList.find((m: any) => m.key === n.targetRef.id)
+      if (targetActivity) {
+        canvas.addMarker(n.id, getActivityHighlightCss(targetActivity))
+      }
+    }
+  })
+  // if (!isEmpty(removeTaskDefinitionKeyList)) {
+  //   taskList.value = taskList.value.filter(
+  //     (item) => !removeTaskDefinitionKeyList.includes(item.taskDefinitionKey)
+  //   )
+  // }
+}
+
+const getActivityHighlightCss = (activity) => {
+  return activity.endTime ? 'highlight' : 'highlight-todo'
+}
+
+const getResultCss = (status) => {
+  if (status === 1) {
+    // 审批中
+    return 'highlight-todo'
+  } else if (status === 2) {
+    // 已通过
+    return 'highlight'
+  } else if (status === 3) {
+    // 不通过
+    return 'highlight-reject'
+  } else if (status === 4) {
+    // 已取消
+    return 'highlight-cancel'
+  } else if (status === 5) {
+    // 退回
+    return 'highlight-return'
+  } else if (status === 6) {
+    // 委派
+    return 'highlight-todo'
+  } else if (status === 7) {
+    // 审批通过中
+    return 'highlight-todo'
+  } else if (status === 0) {
+    // 待审批
+    return 'highlight-todo'
+  }
+  return ''
+}
+
+const getActivityOutgoing = (activity) => {
+  // 如果有 outgoing，则直接使用它
+  if (activity.outgoing && activity.outgoing.length > 0) {
+    return activity.outgoing
+  }
+  // 如果没有，则遍历获得起点为它的【bpmn:SequenceFlow】节点们。原因是：bpmn-js 的 UserTask 拿不到 outgoing
+  const flowElements = bpmnModeler.getDefinitions().rootElements[0].flowElements
+  const outgoing: any[] = []
+  flowElements.forEach((item: any) => {
+    if (item.$type !== 'bpmn:SequenceFlow') {
+      return
+    }
+    if (item.sourceRef.id === activity.key) {
+      outgoing.push(item)
+    }
+  })
+  return outgoing
+}
+const initModelListeners = () => {
+  const EventBus = bpmnModeler.get('eventBus')
+  // 注册需要的监听事件
+  EventBus.on('element.hover', function (eventObj) {
+    let element = eventObj ? eventObj.element : null
+    elementHover(element)
+  })
+  EventBus.on('element.out', function (eventObj) {
+    let element = eventObj ? eventObj.element : null
+    elementOut(element)
+  })
+}
+// 流程图的元素被 hover
+const elementHover = (element) => {
+  element.value = element
+  !elementOverlayIds.value && (elementOverlayIds.value = {})
+  !overlays.value && (overlays.value = bpmnModeler.get('overlays'))
+  // 展示信息
+  // console.log(activityLists.value, 'activityLists.value')
+  // console.log(element.value, 'element.value')
+  const activity = activityLists.value.find((m) => m.key === element.value.id)
+  // console.log(activity, 'activityactivityactivityactivity')
+  if (!activity) {
+    return
+  }
+  // if (!elementOverlayIds.value[element.value.id] && element.value.type !== 'bpmn:Process') {
+  //   let html = `<div class="element-overlays">
+  //           <p>Elemet id: ${element.value.id}</p>
+  //           <p>Elemet type: ${element.value.type}</p>
+  //         </div>` // 默认值
+  //   if (element.value.type === 'bpmn:StartEvent' && processInstance.value) {
+  //     html = `<p>发起人：${processInstance.value.startUser.nickname}</p>
+  //                 <p>部门：${processInstance.value.startUser.deptName}</p>
+  //                 <p>创建时间：${formatDate(processInstance.value.createTime)}`
+  //   } else if (element.value.type === 'bpmn:UserTask') {
+  //     let task = taskList.value.find((m) => m.id === activity.taskId) // 找到活动对应的 taskId
+  //     if (!task) {
+  //       return
+  //     }
+  //     // let optionData = getIntDictOptions(DICT_TYPE.BPM_TASK_STATUS)
+  //     let dataResult = ''
+  //     // optionData.forEach((element) => {
+  //     //   if (element.value == task.status) {
+  //     //     dataResult = element.label
+  //     //   }
+  //     // })
+  //     html = `<p>审批人：${task.assigneeUser.nickname}</p>
+  //                 <p>部门：${task.assigneeUser.deptName}</p>
+  //                 <p>结果：${dataResult}</p>
+  //                 <p>创建时间：${formatDate(task.createTime)}</p>`
+  //     // html = `<p>审批人：${task.assigneeUser.nickname}</p>
+  //     //             <p>部门：${task.assigneeUser.deptName}</p>
+  //     //             <p>结果：${getIntDictOptions(
+  //     //               DICT_TYPE.BPM_PROCESS_INSTANCE_RESULT,
+  //     //               task.status
+  //     //             )}</p>
+  //     //             <p>创建时间：${formatDate(task.createTime)}</p>`
+  //     if (task.endTime) {
+  //       html += `<p>结束时间：${formatDate(task.endTime)}</p>`
+  //     }
+  //     if (task.reason) {
+  //       html += `<p>审批建议：${task.reason}</p>`
+  //     }
+  //   } else if (element.value.type === 'bpmn:ServiceTask' && processInstance.value) {
+  //     if (activity.startTime > 0) {
+  //       html = `<p>创建时间：${formatDate(activity.startTime)}</p>`
+  //     }
+  //     if (activity.endTime > 0) {
+  //       html += `<p>结束时间：${formatDate(activity.endTime)}</p>`
+  //     }
+  //     console.log(html)
+  //   } else if (element.value.type === 'bpmn:EndEvent' && processInstance.value) {
+  //     // let optionData = getIntDictOptions(DICT_TYPE.BPM_TASK_STATUS)
+  //     let dataResult = ''
+  //     // optionData.forEach((element) => {
+  //     //   if (element.value == processInstance.value.status) {
+  //     //     dataResult = element.label
+  //     //   }
+  //     // })
+  //     html = `<p>结果：${dataResult}</p>`
+  //     // html = `<p>结果：${getIntDictOptions(
+  //     //   DICT_TYPE.BPM_PROCESS_INSTANCE_RESULT,
+  //     //   processInstance.value.status
+  //     // )}</p>`
+  //     if (processInstance.value.endTime) {
+  //       html += `<p>结束时间：${formatDate(processInstance.value.endTime)}</p>`
+  //     }
+  //   }
+  //   // console.log(html, 'html111111111111111')
+  //   elementOverlayIds.value[element.value.id] = toRaw(overlays.value)?.add(element.value, {
+  //     position: { left: 0, bottom: 0 },
+  //     html: `<div class="element-overlays">${html}</div>`
+  //   })
+  // }
+}
+
+// 流程图的元素被 out
+const elementOut = (element) => {
+  toRaw(overlays.value).remove({ element })
+  elementOverlayIds.value[element.id] = null
+}
+
+onMounted(() => {
+  xml.value = props.value
+  activityLists.value = props.activityData
+  // 初始化
+  initBpmnModeler()
+  createNewDiagram(xml.value)
+  // 初始模型的监听器
+  initModelListeners()
+})
+
+onBeforeUnmount(() => {
+  // this.$once('hook:beforeDestroy', () => {
+  // })
+  if (bpmnModeler) bpmnModeler.destroy()
+  emit('destroy', bpmnModeler)
+  bpmnModeler = null
+})
+
+watch(
+  () => props.value,
+  (newValue) => {
+    xml.value = newValue
+    createNewDiagram(xml.value)
+  }
+)
+watch(
+  () => props.activityData,
+  (newActivityData) => {
+    activityLists.value = newActivityData
+    createNewDiagram(xml.value)
+  }
+)
+watch(
+  () => props.processInstanceData,
+  (newProcessInstanceData) => {
+    processInstance.value = newProcessInstanceData
+    createNewDiagram(xml.value)
+  }
+)
+watch(
+  () => props.taskData,
+  (newTaskListData) => {
+    taskList.value = newTaskListData
+    createNewDiagram(xml.value)
+  }
+)
+</script>
+
+<style lang="scss">
+/** 处理中 */
+.highlight-todo.djs-connection > .djs-visual > path {
+  stroke: #1890ff !important;
+  stroke-dasharray: 4px !important;
+  fill-opacity: 0.2 !important;
+}
+
+.highlight-todo.djs-shape .djs-visual > :nth-child(1) {
+  fill: #1890ff !important;
+  stroke: #1890ff !important;
+  stroke-dasharray: 4px !important;
+  fill-opacity: 0.2 !important;
+}
+
+:deep(.highlight-todo.djs-connection > .djs-visual > path) {
+  stroke: #1890ff !important;
+  stroke-dasharray: 4px !important;
+  fill-opacity: 0.2 !important;
+  marker-end: url('#sequenceflow-end-_E7DFDF-_E7DFDF-803g1kf6zwzmcig1y2ulm5egr');
+}
+
+:deep(.highlight-todo.djs-shape .djs-visual > :nth-child(1)) {
+  fill: #1890ff !important;
+  stroke: #1890ff !important;
+  stroke-dasharray: 4px !important;
+  fill-opacity: 0.2 !important;
+}
+
+/** 通过 */
+.highlight.djs-shape .djs-visual > :nth-child(1) {
+  fill: green !important;
+  stroke: green !important;
+  fill-opacity: 0.2 !important;
+}
+
+.highlight.djs-shape .djs-visual > :nth-child(2) {
+  fill: green !important;
+}
+
+.highlight.djs-shape .djs-visual > path {
+  fill: green !important;
+  fill-opacity: 0.2 !important;
+  stroke: green !important;
+}
+
+.highlight.djs-connection > .djs-visual > path {
+  stroke: green !important;
+}
+
+.highlight:not(.djs-connection) .djs-visual > :nth-child(1) {
+  fill: green !important; /* color elements as green */
+}
+
+:deep(.highlight.djs-shape .djs-visual > :nth-child(1)) {
+  fill: green !important;
+  stroke: green !important;
+  fill-opacity: 0.2 !important;
+}
+
+:deep(.highlight.djs-shape .djs-visual > :nth-child(2)) {
+  fill: green !important;
+}
+
+:deep(.highlight.djs-shape .djs-visual > path) {
+  fill: green !important;
+  fill-opacity: 0.2 !important;
+  stroke: green !important;
+}
+
+:deep(.highlight.djs-connection > .djs-visual > path) {
+  stroke: green !important;
+}
+
+.djs-element.highlight > .djs-visual > path {
+  stroke: green !important;
+}
+
+/** 不通过 */
+.highlight-reject.djs-shape .djs-visual > :nth-child(1) {
+  fill: red !important;
+  stroke: red !important;
+  fill-opacity: 0.2 !important;
+}
+
+.highlight-reject.djs-shape .djs-visual > :nth-child(2) {
+  fill: red !important;
+}
+
+.highlight-reject.djs-shape .djs-visual > path {
+  fill: red !important;
+  fill-opacity: 0.2 !important;
+  stroke: red !important;
+}
+
+.highlight-reject.djs-connection > .djs-visual > path {
+  stroke: red !important;
+  marker-end: url(#sequenceflow-end-white-success) !important;
+}
+
+.highlight-reject:not(.djs-connection) .djs-visual > :nth-child(1) {
+  fill: red !important; /* color elements as green */
+}
+
+:deep(.highlight-reject.djs-shape .djs-visual > :nth-child(1)) {
+  fill: red !important;
+  stroke: red !important;
+  fill-opacity: 0.2 !important;
+}
+
+:deep(.highlight-reject.djs-shape .djs-visual > :nth-child(2)) {
+  fill: red !important;
+}
+
+:deep(.highlight-reject.djs-shape .djs-visual > path) {
+  fill: red !important;
+  fill-opacity: 0.2 !important;
+  stroke: red !important;
+}
+
+:deep(.highlight-reject.djs-connection > .djs-visual > path) {
+  stroke: red !important;
+}
+
+/** 已取消 */
+.highlight-cancel.djs-shape .djs-visual > :nth-child(1) {
+  fill: grey !important;
+  stroke: grey !important;
+  fill-opacity: 0.2 !important;
+}
+
+.highlight-cancel.djs-shape .djs-visual > :nth-child(2) {
+  fill: grey !important;
+}
+
+.highlight-cancel.djs-shape .djs-visual > path {
+  fill: grey !important;
+  fill-opacity: 0.2 !important;
+  stroke: grey !important;
+}
+
+.highlight-cancel.djs-connection > .djs-visual > path {
+  stroke: grey !important;
+}
+
+.highlight-cancel:not(.djs-connection) .djs-visual > :nth-child(1) {
+  fill: grey !important; /* color elements as green */
+}
+
+:deep(.highlight-cancel.djs-shape .djs-visual > :nth-child(1)) {
+  fill: grey !important;
+  stroke: grey !important;
+  fill-opacity: 0.2 !important;
+}
+
+:deep(.highlight-cancel.djs-shape .djs-visual > :nth-child(2)) {
+  fill: grey !important;
+}
+
+:deep(.highlight-cancel.djs-shape .djs-visual > path) {
+  fill: grey !important;
+  fill-opacity: 0.2 !important;
+  stroke: grey !important;
+}
+
+:deep(.highlight-cancel.djs-connection > .djs-visual > path) {
+  stroke: grey !important;
+}
+
+/** 回退 */
+.highlight-return.djs-shape .djs-visual > :nth-child(1) {
+  fill: #e6a23c !important;
+  stroke: #e6a23c !important;
+  fill-opacity: 0.2 !important;
+}
+
+.highlight-return.djs-shape .djs-visual > :nth-child(2) {
+  fill: #e6a23c !important;
+}
+
+.highlight-return.djs-shape .djs-visual > path {
+  fill: #e6a23c !important;
+  fill-opacity: 0.2 !important;
+  stroke: #e6a23c !important;
+}
+
+.highlight-return.djs-connection > .djs-visual > path {
+  stroke: #e6a23c !important;
+}
+
+.highlight-return:not(.djs-connection) .djs-visual > :nth-child(1) {
+  fill: #e6a23c !important; /* color elements as green */
+}
+
+:deep(.highlight-return.djs-shape .djs-visual > :nth-child(1)) {
+  fill: #e6a23c !important;
+  stroke: #e6a23c !important;
+  fill-opacity: 0.2 !important;
+}
+
+:deep(.highlight-return.djs-shape .djs-visual > :nth-child(2)) {
+  fill: #e6a23c !important;
+}
+
+:deep(.highlight-return.djs-shape .djs-visual > path) {
+  fill: #e6a23c !important;
+  fill-opacity: 0.2 !important;
+  stroke: #e6a23c !important;
+}
+
+:deep(.highlight-return.djs-connection > .djs-visual > path) {
+  stroke: #e6a23c !important;
+}
+
+.element-overlays {
+  width: 200px;
+  padding: 8px;
+  color: #fafafa;
+  background: rgb(0 0 0 / 60%);
+  border-radius: 4px;
+  box-sizing: border-box;
+}
+</style>