masa ustunde kutular yanyana gozukuyor ama mobil goruntude kutular alt alta gozukuyor ama kayık sekılde gozukuyor sebebı nedır acaba

.box {
width: 370px; height: 550px;
float: right;
margin-right:5px;
position: relative;
border: 5px solid #BBB;
background: #ffff;
}
.box2 {
width: 370px; height: 550px;
float: left;
margin-right:5px;
position: relative;
border: 5px solid #BBB;
background: #ffff
}