.custom-select select{width:100%;padding:10px;border:1px solid #ddd;border-radius:5px;-webkit-appearance:none;-moz-appearance:none;appearance:none}.author-box,.custom-select select{background-color:#fff;margin-bottom:10px}.author-box{border:1px solid #ddd;border-radius:3px}.corresponding-author{border:1px solid #ffdc60}.postbox__contact-input input,.postbox__contact-textarea textarea{width:100%;padding:10px;border:1px solid #ddd;border-radius:5px;margin-bottom:10px}.author-btn{height:38px;width:38px;display:flex;align-items:center;justify-content:center;font-size:18px;margin-left:5px;margin-right:5px;border:none;border-radius:5px;cursor:pointer}.btn-success{background-color:#81c784;color:#fff}.btn-danger{background-color:#e57373;color:#fff}.author-header{display:flex;justify-content:space-between;align-items:center;padding:10px;margin-bottom:10px;border-radius:3px}.corresponding-author-header{background-color:#ffdc60;color:#ffdc60}.non-corresponding-author-header{background-color:#fff8df;color:#fff}.corresponding-label{margin-left:10px;display:flex;align-items:center;color:#000}.corresponding-label input{margin-right:5px;accent-color:#000}.postbox__contact-input{width:calc(100%)}.main-btn-sm .loading-spinner{border:4px solid #f3f3f3;border-top-color:#000;border-radius:50%;width:24px;height:24px;animation:spin 1s linear infinite;display:inline-block;vertical-align:middle;margin-right:5px}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}.success-message{background-color:#ffdc60;padding:10px 20px;text-align:center;margin-bottom:20px;border-radius:5px;color:#333;font-size:16px}