.searchbox {
    float: right;
}
form.search {
    position: absolute;
    right: -5px;
    width: 360px;
    top: 90px;
    overflow: hidden;
    font-size: 0px;
}
form.search input {
    font-size: 16px;
    outline:none;
}
form.search .input_txt {
    width: calc(100% - 118px);
    line-height: 50px;
    padding: 0 20px;
    border-left: 1px solid #0072d9;
    border-top: 1px solid #0072d9;
    border-bottom: 1px solid #0072d9;
    border-right: 1px solid #0072d9;
    color: #666;
    border-radius: 10px 0 0 10px;
}
form.search .input_but {
    width: 70px;
    line-height: 50px;
    border: 1px solid #0072d9;
    background: #0072d9;
    color: #fff;
    text-align: center;
    cursor: pointer;
    border-radius: 0 10px 10px 0;
}
.search2 .searchbox{display:none;}
.search3 {
    width: 100%;
    padding: 30px 0;
}
.search3 .searchbox{margin: 0 auto;
    float: none;
    text-align: center;}
.search3 form.search{position: static;    display: inline-block;width:580px;}