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      </g>
    </svg>
  </div>
</div>
!

CSS 

              
                // [mode] attribute selection for demo purposes
// use media queries in production

body {
  text-align: center;
}

.header {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 50vw;
  padding: 20px;
}

.logo {
  height: 30px;
  width: 30px;
  margin: 0 auto;
  
  [mode='medium'] & {
    height: 80px;
    width: 80px;
  }
  
  [mode='large'] & {
    height: 160px;
    width: 160px;
  }
}

#Logotype {
	[mode='small'] & {
		opacity: 0;
	}

	[mode='medium'] & {
		opacity: 0;
	}

	[mode='large'] & {
		opacity: 1;
	}
}

#NOAA {
	[mode='small'] & {
		opacity: 0;
	}

	[mode='medium'] & {
		opacity: 1;
	}
  
	[mode='large'] & {
		opacity: 1;
	}
}
!

JS 

              
                var header     = document.querySelector('.header');
var logoSVG    = document.querySelector('.logo svg');
var viewbox    = logoSVG.getBBox();
var logoWidth  = Math.floor(viewbox.width * 1000) / 1000;
var logoHeight = Math.floor(viewbox.height * 1000) / 1000;

// setMode for demo purposes, use media queries in production
var setMode = function(mode) {
  header.setAttribute('mode', mode);
};

// update logo size when crossing breakpoints
enquire
  .register("screen and (max-width: 499px)", function() {
    setMode('small');
  })
  .register("screen and (min-width: 500px)", function() {
    setMode('medium');
  })
  .register("screen and (min-width: 700px)", function() {
    setMode('large');
  });

// ==============================
// boilerplate demo code...
// ==============================
document.addEventListener('click', function(e) {
  if (e.target.type !== 'button') return;

  var mode = e.target.getAttribute('data-mode');
  setMode(mode);
});
!
999px

Console