.container {
    background-color: #ff0000;
    display: table-cell;
    height: 45px;
    vertical-align: middle;
}
.item {
    background-color: #008000;
    display: table-cell;
    height: 15px;
    vertical-align: middle;
    width: 15px;
}

.container{
 height: 42px;
 line-height: 42px;
 background-color: red;
 display: inline-block
 }

 .item{
 height: 12px;
 width: 12px;
 background-color: green;
 display: inline-block;
 }