.contentA,.contentB{
    width: 50%;
    height: 100px;
}
    
.main{
    display: flex;
}

.codearea{
    display: flex;
    height: 100vh; 
}

.codeareaL-blockly{
    width: 50%;
    height: 100%;
}

.codeareaR-code{
    width: 50%;
    height: 100%;
}