.divMiddleContainer{
    background:white;
    min-height:100px;
    }
    .divMiddleContainer .divLeftContainer{
    display:none;   
    }
    .divMiddleContainer .divCenterContainer{
    float:left;
    width:100%;
    margin:0; 
    min-height:100px;
    }
    .divMiddleContainer .divRightContainer {
    display:none;  
    }