* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
#overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: #46647f;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    font-weight: bold;
    opacity: 1;
    transition: opacity 1s ease-in-out;
    z-index: 500;
}

.hidden {
    opacity: 0;
    pointer-events: none;
    transition: opacity 1s ease-in-out;
}

.remove {
    display: none!important;
}

.content-group {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.year {
    font-size: 6rem;
    transition: font-size 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 2;
    margin-top: 1rem;
    font-family: "Didact Gothic", serif;
    font-weight: bold;
    font-style: normal;
}

.logo-container {
    position: relative;
    width: 8rem;
    height: 8rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.oplogo1, .oplogo2 {
    position: absolute;
    transition: opacity 1s ease-in-out, width 0.5s, height 0.5s;
}

.oplogo1 {
    width: 80%;
    height: 80%;
    z-index: 1;
}

.oplogo2 {
    width: 100%;
    height: 100%;
    opacity: 0;
    z-index: 0;
}
.opL {
    opacity: 0!important;
    transform: translateY(20px);
    transition: opacity 1s ease-out, transform 1s ease-out;
}
.opL.active {
    opacity: 1!important;
    transform: translateY(0);
}