HTML and CSS learning day4

• font size

 body {
          font-size: 20px;
      }

• Font weight
  normaldefault style not bold
  boldbold
  lightthinning
  font-weight: 800;behind the figures to determine the size of the text of 400=normal 700=bold
  the actual development uses more

  font-weight: 800;

• Font style
  font-style: italic;italic font slanted

normalNormalize slanted fonts

em {
        font-style: normal;
    }
    <em>我不是倾斜的字体</em>

• css font compound attribute
  compound attribute abbreviation form saves code, the
  order cannot be reversed, strictly follow the order