Customizing CSS CODE

Hello I have site in ecommerce platform and I have control panel but have limited control, but there is available custom css code to add or modify in it, the code is below, but i’m beginner using css and i want to modify some classes:-

1- Modify logo position to center of header.
2-add new class under slider to show text and image.
3-modify size of brands in bottom body, there 3 brand show in Home I want to show 4 brands and minimize the size.

/* you can use css vars
–primary-color
–btn-default-text-color
–btn-default-border-color
–btn-default-background-color
*/

/* header classes */
.z-header {
padding: 30px;
text-align: center;
background: white;
color: black;
font-size: 16px;

}

.z-header .store-logo {
display: block;
margin-left: auto;
margin-right: auto;
width: 50%;
}
.z-header .store-name {

}

.z-header .search-bar {
display: none ;

}

.z-header .search-bar input {

}

.z-header .search-bar .search-icon {

}

.z-header .back-arrow {

}

.z-header .customer-name {

}

.z-header .customer-login {

}

.z-header .store-language {

}

.z-header .store-country-flag {

}

.z-header .nav-menu-icon {

}

#z-header-shopping-cart {

}

.z-header .shopping-cart-preview {

}

.z-header .shopping-cart-preview .shopping-cart {

}

.z-header .shopping-cart-preview .shopping-cart-header,
.z-header .shopping-cart-preview .shopping-cart .item{

}

/* header menu classes */
.z-header-main-menu {
background-color: white;
}

.z-header-main-menu .item-home-page {

}

.z-header-main-menu .item-all-products {

}

.z-header-main-menu .item-all-categories {
display: none !important;
}

.z-header-main-menu .col-shipping-and-payment{
display: none;
}

.z-header-main-menu ul ul {

}

.z-header-main-menu ul li {

}

.z-header-main-menu ul li:hover {

}

.z-header-main-menu #primary_nav_wrap>ul>li {

}

.z-header-main-menu #primary_nav_wrap>ul>li:hover {

}

.z-header-main-menu .fix-border-top {

}

/* nav menu classes */

.z-nav-menu, .z-nav-menu ul {

}

.z-nav-menu ul li {

}

/*footer classes */

.z-footer {
background-color: white;
}

.z-footer .section-about-us {

}

.z-footer .section-mobile-apps {

}

.z-footer .section-links {

}

.z-footer .section-logos {
display: none ;

}

.z-footer .section-social-networks {

}

.z-footer #footer-download-app-ios-app-store {

}

.z-footer #footer-download-app-android-play-store {

}

.z-footer #footer-download-app-ios-app-store img{

}

.z-footer #footer-download-app-android-play-store img{

}

.z-footer .scroll-to-top-btn {

}

/*page content */
.z-page-container {

}

.modal-content {

}

.dropdown-menu {

}

/* home page */

.z-home-view .sections-title {

}

.z-home-view .section-slider {

}

.z-home-view .section-slider .slide-image {

}

.z-home-view .section-slider .slide-video {

}

.z-home-view .section-store-description {

}

.z-home-view .section-promo-image {

}

.z-home-view .section-brands {

}

.z-home-view .section-recent-products {

}

.z-home-view .section-featured-products {

}

.z-home-view .section-testimonials {

}

.slick-dots li.slick-active button:before {

}

.slick-dots li button::before {

}

/*product list */

.z-products-list-view {

}

.z-products-list-view .section-results-count {

}

.z-products-list-view .section-filter-sort {

}

.z-products-list-view .section-filter-sort .dropdown{

}

.z-products-list-view .form-products-filter {

}

.z-product-card {

}

/* categories list */
.z-categories-list-view {

}

.z-categories-list-view .z-categories-list-view-title {

}

.z-categories-list-view .item-category {

}

.z-categories-list-view .item-category .item-category-details {

}

/*pagination */
.pagination > li > a,
.pagination > li > span {

}

.pagination > .active > a,
.pagination > .active > span,
.pagination > .active > a:hover,
.pagination > .active > span:hover,
.pagination > .active > a:focus,
.pagination > .active > span:focus,
.pagination > li > a:hover,
.pagination > li > span:hover,
.pagination > li > a:focus,
.pagination > li > span:focus {

}

/* product view */
.z-product-view .main-img-container {

}

.z-product-view .main-img-container {

}

.z-product-view .image-thumbs {

}

.z-product-view .product-title {

}

.z-product-view .product-title {

}

.z-product-view .product-price {

}

.z-product-view .product-sku {

}

.z-product-view .add-to-cart {

}

.z-product-view .product-share {

}

.z-product-view .nav-tabs-desc {

}

.z-product-view #description-tab {

}

.z-product-view #options-tab {

}

/* page shipping and payment view */
.z-page-shipping-and-payment-view {

}

.z-page-shipping-and-payment-view .section-shipping-title {

}

.z-page-shipping-and-payment-view .section-shipping-table {

}

.z-page-shipping-and-payment-view .section-shipping-table td {

}

.z-page-shipping-and-payment-view .section-payment-methods-title {

}

.z-page-shipping-and-payment-view .section-payment-methods-row {

}

.z-page-shipping-and-payment-view .section-banks-title {

}

.z-page-shipping-and-payment-view .section-banks-row {

}

.z-page-shipping-and-payment-view .bank-table {

}

.z-page-shipping-and-payment-view .bank-table td {

}

/* page faqs */
.z-faqs-view {

}

/* customer account */
.z-customer-account-view {

}

.z-customer-account-view #profile{

}

.z-customer-account-view #addresses{

}

.z-customer-account-view #orders{

}

/* cart-view */
.z-cart-view {

}
.z-cart-view .section-products-coupons {

}

.z-cart-view .section-coupons {

}

.z-cart-view .section-cart-totals {

}

/* auth /
/
login */

.z-auth-login-view {

}

.z-auth-registration-view {

}

.z-auth-mobile-code-verification-view {

}

.z-auth-email-code-verification-view {

}

.z-auth-update-email-view {

}

/*checkout */
.z-checkout-steps-views {

}

.z-checkout-steps-views .page-title{

}

.z-checkout-steps-views .choose-address-view {

}

.z-checkout-steps-views .choose-shipping-view {

}

.z-checkout-steps-views .choose-payment-view {

}

/* review order view */
.z-review-order-view{

}

.z-review-order-view.order-customer-notes {

}

.z-review-order-view.section-order-totals {

}

/* order details */
.z-order-details-view {

}

.z-order-details-view .section-order-methods-info {

}

.z-order-details-view .section-order-products {

}

/* order invoice */
.z-order-invoice-view {

}

.z-order-invoice-view .page-title {

}

.z-order-invoice-view .section-order-invoice-products {

}

.z-order-invoice-view .section-order-invoice-methods {

}

.z-order-invoice-view .section-order-invoice-totals {

}

.z-order-invoice-view .order-items .product-item {

}

/* common */
.z-page-container .bg-gray {

}

.z-page-container .text-gray {

}

.z-page-container .page-title {

}
@media only screen and (max-width: 375px) {
.z-header .store-logo {

}

}

Hey there

im so sorry to say but, what you are asking is not a support question you need a customization service, unfortunately, im unable to provide customization service on this platform