/* main css */
body {
    background-color: #000;
    font-family: "Open Sans", sans-serif;
}

main, section, div, img, button {
    position: absolute;
}

main {
    width: 1920px;
    height: 1080px;
    background-color: #fff;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    overflow: hidden;
}

section {
    width: 100%;
    height: 100%;
    display: none;
}

#screen1{
    display: block;
}

.frame {
    left: 680px;
    top: 110px;
    display: none;
}

#frame1 {
    display: block;
}

.intro-container1 {
    left: 235px;
    top: 320px;
    width: 480px;
    height: 650px;
    padding: 35px 25px;
}
.intro-container {
    left: 1250px;
    top: 320px;
    width: 480px;
    height: 650px;
    padding: 35px 25px;
}

.intro-container div,
.intro-container button
{
    position: static;
}

.history-txt {
    background-color: rgba(255, 255, 255, 0.25);
    border: solid 1px #0075bf;
    border-radius: 5px;
    padding: 18px;
    color: #0075bf;
    font-weight: 400; 
    font-size: 22px;
}

.learn-more-txt {
    font-size: 24PX;
    color: #0075bf;
    font-weight: 600;
    margin-top: 50px;
}

button {
    background: none;
    border: none;
    border-radius: 0;
    margin: 0;
    padding: 0;
}

.nav-btn {
    width: 390px;
    height: 80px;
    border: solid 1px #0075bf;
    border-radius: 5px;
    background-color: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    margin-top: 20px;
    overflow: hidden;
}

.nav-btn > div:first-child {
    font-size: 21px;
    font-weight: 600;
    color: #0075bf;
    padding: 10px;
}

.nav-btn > div:last-child {
    width: 60px;
    height: 80px;
    background-color: #0075bf;
    color: #fff;
    font-size: 52px;
    padding-top: 6px;

}

#start-btn {
    width: 100%;
    height: 100%;
    padding-top: 800px;
}

#back-btn {
    width: 60px;
    height: 85px;
    background-color: #0075bf;
    border-radius: 0 4px 4px 0;
    color: #fff;
    font-size: 74px;
    opacity: 0.75;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    justify-content: center;
    align-content: center;
    line-height: 1;
}

.screen img {
    display: block;
    
}

.screen div {
    left: 910px;
    top: 300px;
    font-size: 35px;
    font-weight: 700;
    color: #0075bf;

}

#bird{
    pointer-events: none;
}

#trillium{
    pointer-events: none;

}