.scene-bg {
    position: fixed;
    top: -100%;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../image/ui/scene-bg.jpg') no-repeat center/cover;
    z-index: 100;
    animation-fill-mode: forwards;
}
.scene-bg.show {
    animation: bgDropIn 0.5s ease-out forwards;
}
.scene-bg.hide {
    animation: bgDropOut 0.5s ease-in forwards;
}
.character {
    position: fixed;
    right: -100px;
    bottom: 250px;
    width: 300px;
    height: auto;
    z-index: 110;
    display: none;
}
.postcard {
    position: fixed;
    left: 50%;
    bottom: 300px;
    transform: translate(-50%, 0);
    width: 100px;
    height: 60px;
    background: url('../image/ui/mail-close.png') no-repeat center/cover;
    cursor: pointer;
    display: none;
    animation: fall 0.3s ease-in forwards, shake 0.5s infinite alternate 1s;
    animation-fill-mode: forwards;
    z-index: 120;
}
.bubble {
    position: fixed;
    left: 50%;
    bottom: 140px;
    transform: translate(-50%, 0);
    padding: 10px;
    background: white;
    border-radius: 10px;
    box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
    display: none;
    z-index: 130;
}

@keyframes moveCharacter {
    0% { right: -100px; }
    45% { right: 52%; transform: translateX(50%); }
    50% { right: 50%; transform: translateX(50%); }
    100% { right: 110%; }
}
@keyframes fall {
    0% { bottom: 300px; opacity: 1; }
    100% { bottom: 90px; opacity: 1; }
}
@keyframes shake {
    0% { transform: translate(-50%, 0) rotate(-5deg); }
    100% { transform: translate(-50%, 0) rotate(5deg); }
}
@keyframes bgDropIn {
    0% { top: -100%; }
    100% { top: 0; }
}
@keyframes bgDropOut {
    0% { top: 0; }
    100% { top: 100%; }
}

#bubble>a{
    text-decoration: none;
}