Line height default value if font size is 100%

Question

I must override the body style of my page:

body{
    font-size:14px;
    line-height:20px;
}

override:

body{
    font-size:         


        

Answer 1

You can use relative line-height

If your original sizes have been font-size:14px; and line-height:20px; and you want to keep the same proportions you can use 1 * (20/14) em so line-height:1.42em;

body{
    font-size:100%;
    line-height:1.42em;
}