body {
  font-family: "Noto Sans JP", sans-serif;
}
header {
    width: 800px; 
    max-width: 80%;                        /* 任意の幅にする*/
    margin: 0 auto; 
}
main {
    width: 800px;
    max-width: 90%;
    margin: 0 auto;
}
header .row {    
    display:flex ;
    flex-wrap: wrap;
    justify-content: center;                       /* 中央に置く*/
    font-size: 36px;
    font-weight: 700;
    letter-spacing: 3px;                /* 文字間隔を広げる*/
    margin: 30px; 
    gap: 50px;  
     /*テキストの中央寄せ」*/
}

.video-player {
    width: 100%;
    max-width: 800px;
    height: auto;
    display: block;
    margin: 0 auto;
    margin-bottom: 25px;
}
.text {
    text-align: center;
    padding-bottom: 50px;
}
 
 footer {
    background-color: rgb(21, 81, 81);
    text-align: center;
    padding: 5px;
    margin-bottom: 15px;
 }