#dz_search {
    width: 260px;
    height: 30px;
    border: 1px solid #f0f0f0;
    overflow: hidden;
    display: flex;
    align-items: center;
}
::-webkit-input-placeholder{
    color:#ccc;
}    /* 使用webkit内核的浏览器 */
:-moz-placeholder{
    color:#ccc;
}                  /* Firefox版本4-18 */
::-moz-placeholder{
    color:#ccc;
}                  /* Firefox版本19+ */
:-ms-input-placeholder{
    color:#ccc;
}           /* IE浏览器 */
#dz_search input {
    width: 85%;
    height: 30px;
    font-size:14px;
    padding: 0 0 0 15px;
    border: none;
    outline:none;
}

#dz_search button {
    width: 15%;
    height: 30px;
    border: none;
    color: #fff;
    background: #c1c2c4 url("/img/dz_search.png") no-repeat center center;
    background-size: 15px 15px;
    cursor:pointer;
    outline:none;
}