zj-Exercise/js/HTML+CSS3/day18/css/syntax.css

/*
    css中的注释，内容会被解析到css文件中
*/
.box1 {
  background-color: #bfa;
}
.box1 .box2 {
  background-color: #ff0;
}
.box1 .box2 .box4 {
  color: red;
}
.box1 .box3 {
  background-color: orange;
}
.box5 {
  width: 100px;
  color: #bfa;
}
.box6 {
  width: 100px;
  background-image: url('box6/1.png');
}
div {
  width: 115px;
  height: 335px;
}
div {
  width: 300px;
  height: 300px;
}