#custom-search-form {
        margin:0;
        margin-top: 5px;
        padding: 0;
    }
 
    #custom-search-form .search-query {
        padding-right: 3px;
        padding-right: 4px \9;
        padding-left: 3px;
        padding-left: 4px \9;
        /* IE7-8 doesn't have border-radius, so don't indent the padding */
 
        margin-bottom: 0;
        -webkit-border-radius: 3px;
        -moz-border-radius: 3px;
        border-radius: 3px;
    }
 
    #custom-search-form button {
        border: 0;
        background: none;
        /** belows styles are working good */
        padding: 2px 5px;
        margin-top: 2px;
        position: relative;
        left: -28px;
        /* IE7-8 doesn't have border-radius, so don't indent the padding */
        margin-bottom: 0;
        -webkit-border-radius: 3px;
        -moz-border-radius: 3px;
        border-radius: 3px;
    }
 
    .search-query:focus + button {
        z-index: 3;   
    }