.content_semiop_gray {
    /*background-color: rgba(30,107,19,0.7);*/
    /*background-color: rgba(1,11,0,0.75);*/
    /*background-color: rgba(191,255,185,0.4);*/
    /*background-color: rgba(0,3,10,0.75);*/
    
    /*background-color: rgba(184,205,240,0.5);*/
    background-color: rgba(184,205,240,0.7);
    width: 100%; 
    height: 100%;
    padding-left: 1rem;
    padding-right: 1rem;
    padding-top: 1rem;
    padding-bottom: 1rem;
}

.content_opaque {
    background-color: #fff;   
    width: 100%; 
    height: 100%;
    /*border:1px solid red;*/
}

.content_transparent {  
    background: transparent;    
    width: 100%; 
    height: 100%; 
    color: #000; 
    font-weight: normal;
    padding-left: 0px;
    padding-right: 0px;
    padding-top: 0px;
    padding-bottom: 0px;    
}

.iframe_transparent {
    background: transparent;
    margin: 0;
    padding-top: 0px;
    padding-bottom: 0px;
    padding-left: 0px;
    padding-right: 0px;  
}