primereact/blockui/blockui.min.css

PrimeReact is an open source UI library for React featuring a rich set of 90+ components, a theme designer, various theme alternatives such as Material, Bootstrap, Tailwind, premium templates and professional support. In addition, it integrates with Prime

.p-blockui-container{position:relative}.p-blockui{position:absolute;top:0;left:0;width:100%;height:100%;opacity:1;display:flex;align-items:center;justify-content:center}.p-blockui.p-component-overlay{position:absolute}.p-blockui-document.p-component-overlay{position:fixed}