width: calc( (100% -(4 * 20px)) / 5) .container{display:flex;gap:20px;width:100%;height:300px;}.section-1{width:calc((100% - 60px)*.2);background:#ffebee}.section-2{width:calc((100% - 60px)*.25);background:#e8f5e8}.section-3{width:calc((100% - 60px)*.15);background:#e3f2fd}.section-4{width:calc((100% - 60px)*.4);background:#fff3e0}