body {background-color: #2c3e50;}

.form,
.greetings {display:none;}

.showing {display:block;}

@keyframes fadeIn {
    from {opacity: 0;} to {opacity: 1;}
}

.bgImg {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: -1;
    animation: fadeIn 1s linear;
    object-fit: cover; /* 이미지 비율 조정 */
}