/*************************** 
Aspect Ratio
253:700
or 0.36:1
Display	
Aspect Ratio
actual	253:700
or 0.36:1
Aspect Ratio
nearest standard	3:4
Width	253 px
Height	700 px
Diagonal	744.32 px 
********************************/

.divFretboard {
    width: 38vw;
    
    border: 0px solid blue;
    margin-top: 0vw;
    margin-right: 4vw;
    
    aspect-ratio: 0.36/1; 
}