.search-form .form-button-404 {
     position: relative;
     top: 0px !important;
     right: 0px !important;
}
.site-search-404 {
     display: block;
     background-color: transparent;
     padding: 0px;
}

.form-field-site-search-404 {
     width: 260px !important;
     border: 1px solid #bfbfbf;
}