? ? ? ? ? ?<ul?class="header_login">??????????????<li>下載</li>??????????????<li>馬上登錄</li>??????????????<li>注冊(cè)</li>??????????</ul>??????????<div?class="header_search_wrapper">??????????<form>????????????<span?id="search_tab">?????????????????<a?href="#">商品</a>?????????????????<i?class="icon_1"></i>?????????????????<span?class="header_search_sub">?????????????????<a?href="#">商品</a>?????????????????<a?href="#">店鋪</a>?????????????????</span>?????????????</span>?????????????<span>????????????<input?type="text"?required="required"?class="search_input"?placeholder="請(qǐng)輸入關(guān)鍵詞……">????????????<input?type="submit"?value="搜索">????????????</span>??????????</form>??????????</div>?.header_search_wrapper?{ /*?包裝器的相對(duì)定位*/ position:relative; float:?right; height:?45px; width:?425px; line-height:?45px; margin:?13px; border:?2px?solid?#7FC7A0; background-color:?#474645; background-image:?-webkit-linear-gradient(270deg,rgba(255,255,255,1.00)?0%,rgba(97,96,95,1.00)?20.73%,rgba(71,70,69,1.00)?100%); background-image:?-moz-linear-gradient(270deg,rgba(255,255,255,1.00)?0%,rgba(97,96,95,1.00)?20.73%,rgba(71,70,69,1.00)?100%); background-image:?-o-linear-gradient(270deg,rgba(255,255,255,1.00)?0%,rgba(97,96,95,1.00)?20.73%,rgba(71,70,69,1.00)?100%); background-image:?linear-gradient(180deg,rgba(255,255,255,1.00)?0%,rgba(97,96,95,1.00)?20.73%,rgba(71,70,69,1.00)?100%);}/*?span?的絕對(duì)定位*/.header_search_sub?{width:?52px;?display:block;?position:absolute;}.header_search_sub?a?{background-color:#FbFbFb;?display:block;?color:#7B7E7D;??border:2px?#81CF82?solid;}.search_input?{height:30px;?width:300px;}.header_login?{float:right;?line-height:70px;?list-style:none;}.header_login?li?{float:left;?width:75px;?color:#747878;}.icon_1?{width:15px;?height:12px;?background:url(../images/i_1.jpg)?left?no-repeat;?display:inline-block;}/* span 的絕對(duì)定位*/.header_search_sub {width: 52px; display:block; position:absolute; left:-1px;}.header_search_sub a {background-color:#FbFbFb; display:block; color:#7B7E7D; ?border:2px #81CF82 solid;}.search_input {height:30px; width:300px;}.header_login {float:right; line-height:70px; list-style:none;}.header_login li {float:left; width:75px; color:#747878;}.icon_1 {width:15px; height:12px; background:url(../images/i_1.jpg) left no-repeat; display:inline-block;}