html - Multi boxs css hover -

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i want make box pack includes 5 below. when leaving mouse on box, box extend whole main div , display of rest of boxes set none. in code, box1's mouse hover extend.

these codes.

.multibox{  	width: 300px;  	height: 300px;  	border: 1px solid black;  	overflow: hidden;  }  .multibox div{    position: absolute;    transition:  width 0.5s, height 0.5s, -webkit-transform 0.5s;    -moz-transition:  width 0.5s, height 0.5s, -webkit-transform 0.5s; /* firefox 4 */    -webkit-transition:  width 0.5s, height 0.5s, -webkit-transform 0.5s; /* safari , chrome */    -o-transition:  width 0.5s, height 0.5s, -webkit-transform 0.5s; /* opera */    -ms-transition:  width 0.5s, height 0.5s, -webkit-transform 0.5s; /* ie9 (maybe) */  }    .box1{    background: gray;    width: 250px;    height: 50px;    float: right;    display: block;    position: initial !important;  }  .box1:hover{    width: 300px;    height: 300px;  }    .box2{    background: blue;    width: 50px;    height: 250px;    float: left;    display: block;    position: initial !important;    }  .box2:hover{    width: 300px;    height: 300px;  }    .box3{    background: red;    width: 50px;    height: 250px;    display: block;    float: right;    position: initial !important;    }  .box3:hover{    width: 300px;    height: 300px;  }    .box4{    background: green;    width: 200px;    height: 200px;    display: block;    float: right;    position: initial !important;    }  .box4:hover{    width: 300px;    height: 300px;  }    .box5  {    background: brown;    width: 250px;    height: 50px;    display: block;    float: left;    position: initial !important;  }  .box5:hover{    width:300px;    height: 300px;      }
<html>  	<head>  		<meta charset="utf-8">  		<link rel="stylesheet" href="style.css"/>  	</head>  	<body>  		<div class="multibox">  			<div class="box1">  			   box 1  			</div>  			<div class="box2">  			   box 2  			</div>  			<div class="box3">  			   box 3  			</div>  			<div class="box4">  			   box 4  			</div>  			<div class="box5">  			   box 5  			</div>  		</div>  	</body>  </html>

in part have made mistake?

make boxes position:absolute , place them properly.

.multibox{  width: 300px;  height: 300px;  border: 1px solid black;  overflow: hidden;  position: relative;  }  .multibox div{    position: absolute;    transition:  0.5s, height 0.5s, -webkit-transform 0.5s;    -moz-transition:  0.5s, height 0.5s, -webkit-transform 0.5s; /* firefox 4 */    -webkit-transition:  0.5s, height 0.5s, -webkit-transform 0.5s; /* safari , chrome */    -o-transition:  0.5s, height 0.5s, -webkit-transform 0.5s; /* opera */    -ms-transition:  0.5s, height 0.5s, -webkit-transform 0.5s; /* ie9 (maybe) */  }    .multibox div:hover{  z-index: 99;  }  .box1{    background: gray;    width: 250px;    height: 50px;    right: 0;  top: 0;    display: block;  }  .box1:hover{    width: 300px;    height: 300px;  }    .box2{    background: blue;    width: 50px;    height: 250px;    float: left;    display: block;   }  .box2:hover{    width: 300px;    height: 300px;  }    .box3{    background: red;    width: 50px;    height: 250px;    display: block;    right: 0;  top: 50px;  }  .box3:hover{    width: 300px;    height: 300px;  top: 0;  }    .box4{    background: green;    width: 200px;    height: 200px;    display: block;    left: 50px;  top: 50px;   }  .box4:hover{    width: 300px;    height: 300px;  left: 0;  top: 0;  }    .box5  {    background: brown;    width: 250px;    height: 50px;    display: block;    left: 0;  bottom: 0;  }  .box5:hover{    width:300px;    height: 300px;      }
<div class="multibox">  		<div class="box1">  		   box 1  		</div>  		<div class="box2">  		   box 2  		</div>  		<div class="box3">  		   box 3  		</div>  		<div class="box4">  		   box 4  		</div>  		<div class="box5">  		   box 5  		</div>  	</div>


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