Font Sharpness in CSS - Font bold in CSS - Font darkness

  -webkit-text-stroke: 0.2px;

text-shadow: #fff 0px 0.5px 0.5px; 

and you can use color of font to black in CSS

color: black;

or 

filter: drop-shadow(1px 1px 1px black);

    font-weight: 400;

ref:- https://medium.com/better-programming/improving-font-rendering-with-css-3383fc358cbc