<style type="text/css">
.css_test {
margin : 0 auto;
text-align : center;
width : 500px;
}
.css_test input, .css_test textarea {
border-radius : 5px;
border : 5px solid gray;
margin-top : 10px;
padding : 7px;
}
</style>
<button type="button"
onclick="$('.css_test input:disabled, .css_test textarea:disabled').css('border-color', 'red')">눌러보세용</button>
<button type="button"
onclick="$('.css_test input:disabled, .css_test textarea:disabled').css('border-color', '')">다시하기</button>
<div class="css_test">
<input type="text" value="disabled" disabled />
<input type="text" value="" /><br>
<textarea disabled>disabled</textarea>
<textarea></textarea>
</div>