element Collapse折叠面板 嵌套table使用 导致展开面板的时候面板高度跳跃

问题描述：折叠面板嵌套table 导致展开面板 界面高度跳跃。

解决方案：去除折叠面板展开收缩的过度动画，代码如下：

myclass 是给collapse组件绑定的class

.myclass >>>  .collapse-transition
{
    -webkit-transition: 0s height, 0s padding-top, 0s padding-bottom;
    transition: 0s height, 0s padding-top, 0s padding-bottom;
  }

.myclass  >>>   .horizontal-collapse-transition
{
    -webkit-transition: 0s width, 0s padding-left, 0s padding-right;
    transition: 0s width, 0s padding-left, 0s padding-right;
  }
.myclass  >>>   .horizontal-collapse-transition .el-submenu__title .el-submenu__icon-arrow
{
    -webkit-transition: 0s;
    transition: 0s;
    opacity: 0;
  }