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+<template>
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+ <div class="mainPage">
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+ <img
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+ src="../assets/images/icon1.jpg"
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+ class="centerLabel cover bg"
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+ :class="{'grey': bgGrey}"
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+ style="z-index: 1;"
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+ @load="imgLoad"
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+ alt
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+ >
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+ <img
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+ src="../assets/images/icon2.png"
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+ width="100%"
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+ class="bg"
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+ :class="{'grey': bgGrey}"
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+ style="z-index: 3;top:0;left:0"
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+ @load="imgLoad"
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+ alt
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+ >
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+ <div class="userList centerLabel">
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+ <ul class="flex-h">
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+ <li
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+ v-for="(item, index) in users"
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+ v-show="!item.delete"
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+ class="flex-item"
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+ :key="index"
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+ :class="{'active': item.active, 'activeLi': item.active, 'hide': !item.show}"
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+ >
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+ <span>{{item.UserName}}</span>
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+ </li>
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+ </ul>
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+ </div>
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+ <div class="drawUserList centerLabel">
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+ <ul class="flex-h">
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+ <li
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+ v-for="(item, index) in drawUsersArr"
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+ class="flex-item targetLi"
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+ :key="index"
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+ :class="{'active': item.active}"
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+ >
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+ <span>{{item.UserName}}</span>
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+ </li>
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+ </ul>
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+ </div>
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+ <div class="drawEndList">
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+ <a
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+ v-for="(item, index) in drawUsersArr"
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+ :key="index"
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+ :style="{width: item.width + 'px', left: item.startX + 'px', top: item.startY + 'px'}"
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+ >
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+ <span>{{item.UserName}}</span>
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+ </a>
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+ </div>
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+ </div>
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+</template>
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+
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+<script>
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+/* eslint-disable */
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+import '../assets/reset.css'
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+export default {
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+ name: 'draw',
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+ data () {
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+ return {
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+ bgGrey: false,
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+ time: 300,
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+ drawCount: 10,
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+ imgTotal: 2,
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+ curImgNum: 0,
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+ status: false,
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+ sureStatus: true,
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+ arrTimer: null,
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+ users: [],
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+ initUsers: [],
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+ drawUsersArr: [],
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+ randomArr: [],
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+ windowWidth: window.innerWidth,
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+ windowHeight: window.innerHeight,
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+ drawWidth: Math.floor(window.innerWidth * .7)
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+ }
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+ },
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+ created () {
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+ for (var n = 0; n < 500; n++) {
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+ this.initUsers.push({
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+ UserId: n + 1,
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+ UserName: '姓名' + n,
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+ active: false,
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+ show: true,
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+ delete: false
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+ })
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+ }
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+ },
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+ mounted () {
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+ this.$nextTick(() => {
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+ })
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+ },
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+ methods: {
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+ imgLoad () {
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+ this.curImgNum += 1 // 图片加载完 + 1
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+ if (this.curImgNum >= this.imgTotal) { // 图片加载完毕之后执行抽奖初始化逻辑
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+ this.initDraw()
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+ }
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+ },
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+ initDraw () { // 初始化抽奖
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+ // this.arrTimer = window.setInterval(() => { // 间隔时间进行抽奖随机变换效果
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+ // this.users = [] // 每次变换之前置空当前显示列表
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+ // this.calcRandomArr(90, this.initUsers, this.users, 'UserId', this.drawCount) // 从所有名单中随机获取若干个数据（获取数据个数，所有名单对象，当前显示名单列表对象，判重关键字，抽取中奖数量）
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+ // }, this.time)
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+ document.getElementsByTagName('html')[0].onkeydown = (e) => { // 页面添加键盘点击事件监听
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+ e = e || event
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+ if (e.ctrlKey && e.keyCode == 13) { // 启停抽奖组合键：Ctrl + Enter
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+ this.sureStatus = true
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+ if (!this.status) { // 重新抽奖
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+ this.bgGrey = true
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+ this.status = !this.status
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+ this.users = []
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+ this.drawUsersArr = [] // 置空中奖数据
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+ this.calcRandomArr(90, this.initUsers, this.users, 'UserId', this.drawCount)
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+ this.arrTimer = window.setInterval(() => {
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+ this.users = []
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+ this.calcRandomArr(90, this.initUsers, this.users, 'UserId', this.drawCount)
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+ }, this.time)
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+ } else { // 抽奖变换动画暂定
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+ this.status = !this.status
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+ clearInterval(this.arrTimer)
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+ this.arrTimer = null
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+ this.users.map((item) => { // 记录中奖数据，以便读取过渡动画结束位置坐标
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+ if (item.active) {
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+ this.drawUsersArr.push({ ...item, width: 0, startX: '', startY: '' })
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+ }
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+ })
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+ this.$nextTick(() => {
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+ this.drawUsersArr.map((item, index) => { // 记录中奖名单结束位置坐标
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+ item.endX = document.getElementsByClassName('targetLi')[index].getBoundingClientRect().x
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+ item.endY = document.getElementsByClassName('targetLi')[index].getBoundingClientRect().y
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+ })
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+ for (var n = 0; n < this.drawCount; n++) { // 记录中奖名单开始位置坐标
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+ this.drawUsersArr[n].startX = document.getElementsByClassName('activeLi')[n].getBoundingClientRect().x
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+ this.drawUsersArr[n].startY = document.getElementsByClassName('activeLi')[n].getBoundingClientRect().y
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+ this.drawUsersArr[n].width = document.getElementsByClassName('activeLi')[n].getBoundingClientRect().width
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+ }
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+ })
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+ }
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+ } else if (e.ctrlKey && e.keyCode == 32) { // 确认抽奖结果组合键：Ctrl + Space
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+ if (!this.status) {
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+ if (this.sureStatus) { // 之前已执行过Ctrl + Enter的前提下，才能执行确认动作
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+ this.sureStatus = !this.sureStatus
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+ this.users.map((item) => { // 隐藏未抽中数据
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+ item.show = false
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+ })
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+ this.drawUsersArr.map((item) => {
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+ item.startX = item.endX
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+ item.startY = item.endY
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+ })
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+ }
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+ }
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+ }
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+ }
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+ },
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+ calcRandomArr (num, pArr, aArr, key, activeNum) {
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+ if (pArr.length > num) {
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+ var randomNum = Math.floor(Math.random() * pArr.length), bool = false
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+ aArr.map((item) => {
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+ if (item[key] === pArr[randomNum]) {
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+ bool = true
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+ }
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+ })
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+ if (!bool) aArr.push({ ...pArr[randomNum], active: false })
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+ if (aArr.length === num) {
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+ return this.returnSubArr(aArr, activeNum, 'active', 0)
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+ } else {
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+ this.calcRandomArr(num, pArr, aArr, key, activeNum)
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+ }
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+ } else {
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+ return { ...pArr[randomNum], active: true }
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+ }
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+ },
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+ returnSubArr (arr, subNum, key, count) {
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+ var randomNum = Math.floor(Math.random() * arr.length)
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+ if (!arr[randomNum][key]) {
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+ arr[randomNum][key] = true
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+ count += 1
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+ }
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+ if (count < subNum) {
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+ this.returnSubArr(arr, subNum, key, count)
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+ } else {
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+ return arr
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+ }
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+ }
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+ }
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+}
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+</script>
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+
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+<style>
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+.mainPage {
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+ overflow: hidden;
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+ background: #000;
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+}
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+.bg{
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+ -webkit-filter: brightness(100%);
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+ filter: brightness(100%);
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+ transition: filter .3s linear;
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+ -webkit-transition: filter .3s linear;
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+ display: block;
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+ position: absolute;
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+}
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+.bg.grey{
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+ -webkit-filter: brightness(20%);
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+ filter: brightness(20%);
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+}
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+.drawEndList {
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+ width: 100%;
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+ height: 100%;
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+ position: relative;
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+ overflow: hidden;
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+ z-index: 200;
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+}
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+.drawEndList > a {
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+ display: inline-block;
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+ box-sizing: border-box;
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+ border-radius: 60px;
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+ border: 2px solid #e7963b;
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+ position: absolute;
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+ box-shadow: 0 0 0.2rem 0.15rem rgba(231, 150, 59, 0.2);
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+ transition: none 0.5s ease-out 1s;
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+ -webkit-transition: none 0.5s ease-out 1s;
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+ transition-property: left, top;
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+ -webkit-transition-property: left, top;
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+}
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+.drawEndList > a > span {
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+ width: 100%;
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+ display: block;
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+ line-height: 60px;
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+ border-radius: 60px;
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+ color: #fff;
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+ text-align: center;
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+ font-size: 27px;
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+ white-space: nowrap;
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+ overflow: hidden;
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+ text-overflow: ellipsis;
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+ box-shadow: 0 0 0.2rem 0.15rem rgba(231, 150, 59, 0.2) inset;
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+}
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+.userList,
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+.drawUserList {
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+ width: 44%;
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+ min-width: 1500px;
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+ overflow: visible;
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+ z-index: 100;
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+}
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+.drawUserList {
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+ width: 22%;
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+ min-width: 750px;
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+ opacity: 0;
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+}
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+.userList > ul,
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+.drawUserList > ul {
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+ width: 100%;
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+ position: relative;
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+ overflow: visible;
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+ flex-wrap: wrap;
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+ -webkit-flex-wrap: wrap;
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+ transition: all 0.2s linear;
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+ -webkit-transition: all 0.2s linear;
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+ justify-content: center;
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+}
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+.userList > ul > li,
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+.drawUserList > ul > li {
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+ min-width: 10%;
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+ max-width: 10%;
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+ margin: 10px 0.5%;
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+ box-sizing: border-box;
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+ border: 2px solid #79321c;
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+ border-radius: 60px;
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+ overflow: hidden;
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+ opacity: 1;
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+ transition: all 0.2s linear;
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+ -webkit-transition: all 0.2s linear;
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+}
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+.drawUserList > ul > li {
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+ min-width: 20%;
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+ max-width: 20%;
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+ margin: 10px 1%;
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+}
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+.userList > ul > li.hide {
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+ opacity: 0;
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+}
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+.userList > ul > li > span,
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+.drawUserList > ul > li > span {
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+ width: 100%;
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+ display: block;
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+ line-height: 60px;
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+ border-radius: 60px;
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+ color: #777;
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+ text-align: center;
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+ font-size: 27px;
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+ white-space: nowrap;
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+ overflow: hidden;
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+ text-overflow: ellipsis;
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+}
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+.userList > ul > li.active {
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+ border-color: #e7963b;
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+ box-shadow: 0 0 0.2rem 0.15rem rgba(231, 150, 59, 0.2);
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+}
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+.userList > ul > li.active > span {
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+ border-color: #e7963b;
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+ box-shadow: 0 0 0.2rem 0.15rem rgba(231, 150, 59, 0.2) inset;
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+ color: #fff;
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+}
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+</style>
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+
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