#global-header {
    animation: fadein 1s;
}

#global-header .logo img {
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.layer_2 {
    width: 100%;
    height: 100%;
    position: fixed;
    z-index: 3;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: block;
}

.layer_1 {
    width: 100%;
    height: 100%;
    position: fixed;
    z-index: 2;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: block;
}

.layer_1 #title {
    margin-top: 100px;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: white;
    font-size: 1.6em;
    font-weight: bolder;
    text-shadow: 2px 2px 15px #36E8FF, 0 0 1em white, 0 0 0.2em white;
    animation: zoomIn 1.2s;
}

#sound-control {
    font-size: 18px;
    font-weight: bolder;
    margin-top: 23px;
    margin-left: 280px;
    color: var(--main-textColor);
    cursor: pointer;
}

#sound-control.on {
    color: var(--main-textBrColor);
}

#siteVerDisplay {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    font-size: 16px;
    margin-right: 30px;
    color: white;
    text-shadow: var(--main-textTextShadow);
}

#siteCredit {
    display: flex;
    margin-top: 75px;
    color: white;
    align-items: flex-end;
    flex-wrap: wrap;
    justify-content: center;
    align-content: center;
    text-align: center;
    text-shadow: var(--main-textTextShadow);
}

#startBtn {
    margin-top: 280px;
    font-size: 18px;
    font-weight: bolder;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    align-content: center;
    color: white;
    text-shadow: var(--main-textTextShadow);
    /* 초기 display: none 처럼 크기를 0 으로 하여 보여주지 않음*/
    transform: scale(0);
    /* 0.5 초 동안 애니메이션을 실행, 단 0.8초 지연시켜 0.8초 후에 애니메이션을 실행 */
    animation: zoomIn .5s .8s cubic-bezier(0.165, 0.84, 0.44, 1) forwards;
}
@media screen and (min-device-width : 435px) {
    #siteVerDisplay {
        margin-right: 53px;
    }
}