#other_sheet-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 6px;
    margin-top: 260px;
    width: 100%;
}

#other_sheet_label {
    justify-self: center;
    font-weight: bold;
    font-size: 25px;
}

#read_button {
    margin-top: 30px;
    justify-self: center;
    border: none;
    color: rgba(148, 170, 255, 1);
    background-color: white;
    font-size: 22px;
    width: 80%;
    max-width: 300px;
    padding: 10px 0;
    border-radius: 8px;
    transition: all 0.2s ease;
    box-shadow: 0 2px 6px rgba(148, 170, 255, 0.2);
    cursor: pointer;
}

#read_button:hover {
    color: white;
    background-color: rgba(148, 170, 255, 1);
    box-shadow: 0 4px 12px rgba(148, 170, 255, 0.4);
    transform: translateY(-2px);
}

#read_button:active {
    transform: translateY(1px);
    box-shadow: 0 2px 4px rgba(148, 170, 255, 0.3);
    background-color: rgba(120, 140, 230, 1); /* 少し濃いめで押した感 */
}

#video {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 320px;
  height: auto;
  z-index: 10;
}