.blog-iframe{
    border-style: none;
    width:1000px; 
    height: 700px; 
    overflow: auto;
    background-color: black;
}
@media only screen and (max-width: 1000px) 
{
   .blog-iframe{
    width:800px; 
    } 
}
@media only screen and (max-width: 800px) 
{
   .blog-iframe{
    width:900px; 
    } 
}
@media only screen and (max-width: 600px) 
{
   .blog-iframe{
    width:500px; 
    } 
}
@media only screen and (max-width: 500px) 
{
   .blog-iframe{
    width:400px; 
    } 
}