.search {
    width: 70%;
    height: 30px;
    background: #fff;
    border-radius: 20px;
    position: relative;
    margin:0 auto;}
.but {
    position: absolute;
    right: 15px;
    top: 10.5px;
    width: 15px;
    height: 15px;}

.searchtx {
    border: 0;
    margin-left: 15px;
    width: 170px;
    height: 30px;border-radius: 20px;

    line-height: 30px;}