el-carousel走马灯指示器设置为圆点

	.el-carousel__indicator--horizontal .el-carousel__button {
        width: 10px;
        height: 10px;
        background: #00F6FF;
        border: 1px solid #00F6FF;
        border-radius: 50%;
        opacity: 0.3;
    }
    .el-carousel__indicator--horizontal.is-active .el-carousel__button{
        width: 10px;
        height: 10px;
        background: #00F6FF;
        border-radius: 50%;
        opacity: 1;
    }