何故ですか？(^^;
<iframe width="640" height="360" src="https://www.youtube.com/embed/5MJy_eyGIM0" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
<iframe width="640" height="360" src="https://www.youtube.com/embed/aOTNExYiItQ" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
<iframe width="640" height="360" src="https://www.youtube.com/embed/4gdvHWy0r_M" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
<iframe width="640" height="360" src="https://www.youtube.com/embed/LOawnF0TW3I" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
<iframe width="640" height="360" src="https://www.youtube.com/embed/3j3pqISL_Go" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
왜입니까?(^^;