.grid-layout-box {
    position: absolute!important; 
    top: 0;     
    bottom: 0px; 
    left: 0px;
    right: 620px;    
}

.readingPane-layout-box {
    position: absolute!important; 
    top: 0; 
    bottom: 0px; 
    right: 0px; 
    height: auto; 
    width: 620px;
    background-color: white;    
    border-left: 1px solid lightgrey;       
}

@media screen and (max-width:950px) {

    .grid-layout-box {
        left: 0;
        right: 0;
    }
    .readingPane-layout-box {
        display: none;
    }    
}
@media screen and (max-width:1300px) {
    .grid-layout-box {
        right: 0;
    }    

    .readingPane-layout-box {
        display: none;
    }    
}

#rttGauge {
    margin-bottom: 10px;
}