#splash-screen {
    z-index: 100000;
    background-color: #000000;
    transition: opacity 0.8s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;

}

/*最初の画面のロゴ*/
.splash-logo {
    width: 400px;
    animation: logo-fade 1.5s ease-out forwards;
    text-align: center;
    vertical-align: middle;
}

@keyframes logo-fade {
    from {
        opacity: 0.5;
    }

    to {
        opacity: 1;
    }
}