Матвей Тепайкин

var c = String(Math.floor((window.outerWidth / window.innerWidth) * 100) / 100);
var d = ['0.25', '0.33', '0.5', '0.67', '0.75', '0.8', '0.9', '1'];

if (d.indexOf(c) == -1) {
    for (var i = 0; i < d.length; i++) {
        if (Number(d[i]) > Number(c)) {
            $(':root').css('--max-width-one', window.innerWidth * Number(d[i]) + 'px');
            $(':root').css('--width-out', window.innerWidth * Number(d[i]) + 'px');
            break;
        }
    }
}

:root { 
  --width-out: 1920px;
  --max-width-one: 1920px;
}

.header, .section_one,
.section_two, .footer {
  margin-left: auto;
  margin-right: auto;
  max-width: var(--max-width-one); 
}