PKTseng
4/7/2020 - 1:08 PM

index

index

.container {
  width: 500px;
  background: #0099ff;
  margin: 0 auto;
}
.container .item {
  background: #00ffa2;
  color: #d32a2a;
  text-align: center;
  font-size: 36px;
  margin-bottom: 10px;
}
.container .item1 {
  height: 150px;
  width: 150px;
}
.container .item2 {
  height: 200px;
  width: auto;
  //因為沒設定寬度,所以會自適應延伸父元素,
  //父元素寬多少ex:500px,子元素寬就會多少ex:500px
}
.container .item3 {
  height: auto;
  width: 400px;
}