CSS クラスセレクター

index.html

@charset "utf-8";

body {
  margin: 0;
}

.container {
  width: 400px;
  margin: 32px auto 0;
  border: 8px solid blue;
}

.box-1 {
  width: 100px;
  height: 100px;
  background-color: pink;
}

.box-2 {
  width: 100px;
  height: 50px;
  background-color: skyblue;
}

.box-3 {
  width: 100px;
  height: 100px;
  background-color: orange;
}

style.css

@charset "utf-8";

body {
  margin: 0;
}

.container {
  width: 400px;
  margin: 32px auto 0;
  border: 8px solid blue;
}

.box-1 {
  width: 100px;
  height: 100px;
  background-color: pink;
}

.box-2 {
  width: 100px;
  height: 50px;
  background-color: skyblue;
}

.box-3 {
  width: 100px;
  height: 100px;
  background-color: orange;
}