#screen
{
    font-size: 1.6vw;
    margin:30px;
}

#logo
{
    max-width:45vw;
    height: auto;
}

#column
{
    width: 98%;
    padding: 0px;
    margin:0px;
    display: flex;
}

.leftView
{
    width: 40%;
    padding-right: 8px;
}

.rightView
{
    width: 50%;
    height:calc(width * 4 / 3);
}

.caption
{
    background-color:aliceblue;
    color:darkslateblue;
    font-size:2.5vw;
    border-bottom: 6px double darkslateblue;
    border-radius: 10px;
}

.choice a
{
    border:1px solid darkslateblue;
    border-radius: 25%;
    padding: 7px;
    margin: 7px;
    font-size: 200%;
}

iframe
{
    width:768px;
    height: 1024px;
    max-width:90%;
    max-height:calc(max-width * 4 / 3);
    /*width: 95%;*/
    /*max-width: 1024px;
    max-height: calc(1024px * 4 / 3);*/
}

@media screen and (max-width:820px) {
    
}