00008.【CSS】背景图案的大小

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<template>
  <div class="box1"></div>
  <div class="box2"></div>
  <div class="box3"></div>
</template>

<script setup>

</script>

<style scoped>

.box1 {
  width: 1000px;
  height: 1000px;
  background-image: url("../assets/balloons.jpg");
  background-repeat: no-repeat;
  background-size: 100px 10em;
}

.box2 {
  width: 1000px;
  height: 1000px;
  background-image: url("../assets/balloons.jpg");
  background-repeat: no-repeat;
  background-size: cover;
  background-color: green;
}

.box3 {
  width: 1000px;
  height: 1000px;
  background-image: url("../assets/balloons.jpg");
  background-repeat: no-repeat;
  background-size: contain;
  background-color: yellow;
}
</style>