一、问题

当前页会出现黑色边框

二、解决方案

审查元素找到选择的按钮类名然后控制其鼠标事件的样式

css代码

:deep(.el-pagination.is-background .el-pager li:link) {
    outline: none;
}
:deep(.el-pagination.is-background .el-pager li:hover) {
    outline: none;
}
:deep(.el-pagination.is-background .el-pager li:not(.disabled).visited) {
    outline: none;
}
:deep(.el-pagination.is-background .el-pager li:active) {
    outline: none;
}
:deep(.el-pagination.is-background .el-pager li:focus) {
    outline: none;
}

三、效果展示