.wp-bottom-menu-search-form .search-field {
border: 3px solid #12b0e7 !important;
padding-left: 8px; 
}
.wp-bottom-menu-search-form .search-field:focus {
outline: none !important; 
border: 3px solid #000 !important; 
}
.wp-bottom-menu-search-form .search-field {
padding-left: 8px;
}