SOURCE

console 命令行工具 X clear

                    
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console
<div class="c1">
  <div class="flb flbox1">box1</div>
  <div class="flb flbox2">box2</div>
  <div class="flb flbox3">box3</div>
</div>
<div class="c2">
  <div class="flb flbox1">box1</div>
  <div class="flb flbox2">box2</div>
  <div class="flb flbox3">box3</div>
</div>
.flb {
  float: left;
  width: 100px;
  height: 100px;
}
.flbox1{background-color: rgba(33, 114, 214, 0.8);}
.flbox2{background-color: rgba(255, 82, 0, 0.8);}
.flbox3{background-color: rgba(90, 243, 151, 0.8);}


.container1 {
  clear: both;
}