nutui/src/packages/textbox/textbox.scss

.nut-textbox{
	background:#fff;
    .txt-area{
        border: 1px solid #ececee;
	    padding: 5px 20px 5px 10px;;
	    position: relative;
        &.num-none{
            padding:10px 20px;
        }
        textarea{
            resize: none;
		    width: 100%;
		    border: none;
		    outline: none;
		    margin: 0;
		    padding: 0;
		    background: transparent;
            display:block;
        }
        span{
            color: #666;
		    position: absolute;
		    right: 10px;
		    bottom: 5px;
		    font-size:12px;
        }
        &.error{
        	border:1px solid #e2231a;
        	span{
        		color:#e2231a;
        	}
        }
    }
}