*, *::before, *::after{ box-sizing:border-box; } *{ margin:0; } html,body{ min-height:100%; } img{ display:block; max-width:100%; } button,input,textarea,select{ font:inherit; } button{ background:none; border:0; cursor:pointer; } a{ color:inherit; text-decoration:none; } ul{ list-style:none; padding:0; }