几个简单的搜索框

<style>
* {
       box-sizing:border-box;
}
body {
       margin:0;
       padding:0;
       background-image:url(ydrzimages/p3.jpg);
       font-weight:500;
       font-family:"Microsoft YaHei","宋体","Segoe UI","Lucida Grande",Helvetica,Arial,sans-serif,FreeSans,Arimo;
}
#container {
       width:500px;
       height:820px;
       margin:0 auto;
}
div.search {
       padding:10px 0;
}
form {
       position:relative;
       width:300px;
       margin:0 auto;
}
input,button {
       border:none;
       outline:none;
}
input {
       width:100%;
       height:42px;
       padding-left:13px;
}
button {
       height:42px;
       width:42px;
       cursor:pointer;
       position:absolute;
}
/*搜索框6*/
     
.bar6 input {
       border:2px solid #c5464a;
       border-radius:5px;
       background:transparent;
       top:0;
       right:0;
}
.bar6 button {
       background:#c5464a;
       border-radius:0 5px 5px 0;
       width:60px;
       top:0;
       right:0;
}
.bar6 button:before {
       content:"搜索";
       font-size:13px;
       color:#F9F0DA;
}
/*搜索框7*/
      
.bar7 form {
       height:42px;
}
.bar7 input {
       width:250px;
       border-radius:42px;
       border:2px solid #324B4E;
       background:#F9F0DA;
       transition:.3s linear;
       float:right;
}
.bar7 input:focus {
       width:300px;
}
.bar7 button {
       background:none;
       top:-2px;
       right:20px;
}
.bar7 button:before {
       content:"Search";
       font-family:FontAwesome;
       color:#324b4e;
}
/*搜索框8*/
       
.bar8 form {
       height:42px;
}
.bar8 input {
       width:0;
       padding:0 42px 0 15px;
       border-bottom:2px solid transparent;
       background:transparent;
       transition:.3s linear;
       position:absolute;
       top:0;
       right:0;
       z-index:2;
}
.bar8 input:focus {
       width:300px;
       z-index:1;
       border-bottom:2px solid #F9F0DA;
}
.bar8 button {
       background:#683B4D;
       top:0;
       right:0;
}
.bar8 button:before {
       content:"Go";
       font-family:FontAwesome;
       font-size:16px;
       color:#F9F0DA;
}

</style>


<div id="container">
    <div class="search bar6">
        <form>
            <input type="text" placeholder="请输入顾客姓名" name="cname">
            <button type="submit"></button>
        </form>
    </div>

    <div class="search bar7">
        <form>
            <input type="text" placeholder="请输入房号" name="crid">
            <button type="submit"></button>
        </form>
    </div>

    <div class="search bar8">
        <form>
            <input type="text" placeholder="请输入顾客证件号">
            <button type="submit"></button>
        </form>
    </div>
</div>