[Tu Tran]

Hi,

To solve this problem, please go to the file skin\frontend\default\sns_toronto\less\responsive.less, add the code below

#sns_header_bottom .col_right{
		#search_mini_form{
			.form-search {
				border-color: #ddd;
				input.input-text{width: 150px !important; padding-left: 10px;}
			}
		}
	}

into the code which contained by ‘@media (max-width: @screen-lg-min){‘
Please see the screenshot below
http://take.ms/KP6KF

Regards,