vue中的el-button样式自定义方式

/* 更改elememt-ui地固定样式 */
/*按钮的背景颜色样式*/
.el-button--primary {
  background-color: rgb(247, 146, 146) !important;
}
/*鼠标经过*/
.el-button--primary:hover {
  background-color: rgb(178, 253, 144) !important;
}
/*鼠标按下*/
.el-button--primary:focus {
  background-color: rgb(159, 230, 240) !important;
}

.el-button--primary {
    background-color: #105EED !important;
    color: white !important;
    font-size: 20px;
    height: 66px;
}   

<el-button type="info" data-id="2" plain :style="{'background-color': tab == 2 ? '#839DB9' : '','color': tab == 2 ? 'white' : 'black'} " @click="tabChange">11111</el-button>
<el-button type="info" data-id="3" plain :style="{'background-color': tab == 3 ? '#839DB9' : '','color': tab == 3 ? 'white' : 'black'} " @click="tabChange">2222</el-button>
<div v-show="tab==2" class="width48"></div>
<div v-show="tab==3" class="width48"></div>

tabChange(e) {
     let tabid = e.currentTarget.dataset.id
     this.tab = tabid
 },

     <el-button
       slot="reference"
       type="text"
       icon="el-icon-my-qr-code"
       :class="        //控制显示图标的颜色
         hasIncludeHttpText(row)
           ? 'qr-code-icon-default'
           : 'qr-code-icon-disabled'
       "
       :disabled="!hasIncludeHttpText(row)"   
     ></el-button>

.qr-code-icon-default {
  /deep/ .el-icon-my-qr-code {
    background: url('~@home/assets/images/qr-code-icon.svg') no-repeat;
  }
}
.qr-code-icon-disabled {
  /deep/ .el-icon-my-qr-code {
    background: url('~@home/assets/images/disabled-qr-code-icon.svg') no-repeat;
  }
}
/deep/.el-icon-my-qr-code {
  font-size: 16px;
  background-size: cover;
}
/deep/ .el-icon-my-qr-code:before {
  content: '替';
  font-size: 16px;
  visibility: hidden;
}