css 초기화 선언

default.css

/* reset */

body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,code,form,fieldset,legend,textarea,blockquote,th,td,input,select,textarea,button{margin:0;padding:0;}

fieldset,img{border:0 none;}

dl,ul,ol,menu,li {list-style:none;}

blockquote, q {quotes: none;}

blockquote:before, blockquote:after,q:before, q:after {content: '';content: none;}

a{text-decoration:none}

legend, caption{font-size:0; line-height:0}

.hidden {position：absolute; left:-10000px; top:auto;width:1px; height:1px; overflow:hidden; }

or

.hidden {display: block; width: 0; text-indent: -9000px; overflow: hidden;}