.box{
    border: solid black 2px;

}
.test{
    background-color: black;
    height:33vh;
    

}

.test2{
    background-color:blue;
    height:20vh;

}

.test3{
    background-color: green;
    height:20vh;

}

#postBottom{
    position: absolute;
    width:50%;
    height: 15px;
    background-color: brown;
    bottom:0px;
}

#postLeft{
    position: absolute;
    width:15px;
    height:90%;
    left:0px;
    bottom:0px;

    background-color: brown;
}

.alignCenter{
    text-align:center;
}