.banner-area { padding-bottom: 69px; position: relative; display: flex; justify-content: center; }
.banner-area .absolute-button { position: absolute; top: 40.25%; background: none; border: none; outline: none; }
.banner-area .absolute-button img { width: 75%; max-width: 500px; }
.banner-area img { width: 100%; max-width: 640px; }

#submit-button-area { opacity: 0; visibility: hidden; position: fixed; bottom: 0; display: flex; width: 100%; } 
#submit-button-area.active { opacity: 1; visibility: visible; } 
#submit-button-area .fixed-button { padding: 20px; width: 100%; font-size: 1.35rem; background-color: #000; color: #fff; border: none; } 
#submit-button-area .fixed-button[disabled=disabled],
#submit-button-area .fixed-button:disabled { background-color: #b3b3b3; color: #6F6F6F; }