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

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

main {
    width: 2250px;
    height: 1500px;
    background-color: white;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    overflow: hidden;
}

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

#screen1 {
    display: block;
}

.frame {
    left: 730px;
    top: 160px;
    display: none;
}

#frame1,#title-txt {
    display: block;
}

#main-title{
    position: absolute;
    left: 110px;
    top: 50px;
    font-size: 150px;
    font-weight: 800;
    color: #0075bf;
}

.sub-title {
    left: 110px;
    top: 220px;
    font-size: 60px;
    font-weight: 700;
    color: #0075bf;
}

.intro-container {
    left: 735px;
    top: 330px;
    width: 755px;
    height: 1024px;
    padding: 40px;
}

.intro-container * {
    position: static;
}

.history-txt {
    background-color: white;
    color: #0075bf;
    border: solid 2px #0075bf;
    border-radius: 10px;
    padding: 30px 40px;
    font-size: 23px;    
    text-align: justify;
}

.learn-more-txt {
    margin-top: 60px;
    font-size: 38px;
    font-weight: 600;
    color: #0075bf;
}

button {
    background: none;
    color: inherit;
    border: none;
    font: inherit;
    outline: inherit;
    cursor: pointer;
}

.to-screen-btn{
    display: flex;
    align-items: center; 
    width: 760px;
    height: 118px;
    border: solid 2px #0075bf;
    border-radius: 10px;
    padding: 0;
    background-color: #0075bf;
    margin-top: 30px;
    overflow: hidden;
}

.to-screen-btn > div:first-child {
    padding: 30px;
    font-size: 33px;
    color: #fff;
    font-weight: 600;
}

.to-screen-btn > div:last-child {
    width: 100%;
    background-color: #0075bf;
    color: white;
    font-size: 33px;
    display: flex;
    justify-content: center;
    flex-shrink: 0;
}

.click-through {
    pointer-events: none;
}

#start-btn{
    width: 100%;
    height: 100%;
    font-size: 40px;
    font-weight: 600;
    padding-top: 650px;
    cursor: pointer;
    color: #fff;
}

#back-btn{
    width: 70px;
    height:130px;
    background-color: #0075bf;
    border-radius: 0 10px 10px 0;
    color: #fff;
    font-size: 80px;
    font-weight: 600;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    justify-content: center;
}

/**** Screen1 ****/
#screen2 .btn{
    left: 50%;
    transform: translateX(-50%);
    background: #ffff;
    color: #0075bf;
    padding: 20px 50px;
    font-size: 60px;
    font-weight: 700;
    border-radius: 12px;
    z-index:10;
    cursor:pointer;
}
#screen2 .btn1{
    top: 32.7%;
}
#screen2 .btn2{
    top: 44%;
}
#screen2 .btn3{
    top: 55.2%;
}
#screen2 .btn4{
    top: 66.5%;
}
#screen2 .btn5{
    top: 78%;
}
#screen2 .outer-content{
    width: 1600px;
    height: 810px;
    left: 292px;
    top: 490px;
}
#screen2 .outer-content > div{
    width:100%;
}
#screen2 .outer-content img{
    border-radius: 15px;
}
#screen2 .outer-content .pic2{
    top: 420px;
}
#screen2 .outer-content > div .txt{
    background: #fff;
    width: 38%;
    right: 0;
    height: 805px;
    padding: 30px;
    color:#0075bf;
    border: 6px solid #0075bf;
    border-radius: 15px;
}
#screen2 .outer-content > div .txt h1{
    font-size: 45px;
    font-weight: 700;
}
#screen2 .outer-content > div .txt p{
    font-size: 33px;
    margin-bottom:30px;
}
#screen2 .flower{
    bottom: -29px;
    left: 30px;
    width: 500px;
}

.desc{
    font-size: 2rem;
    position: absolute;
    left: 7rem;
    width: 70%;
    top: 19rem;
    font-weight: 600;
    color: #0075bf;
}

#screen3 .tree{
    bottom: -29px;
    right: 0;
    width: 940px;
}
#screen3 .outer-content{
    background-color: #fff;
    width: 1475px;
    height: 747px;
    left: 50%;
    transform: translate(-50%, -50%);
    top: 56%;
    border: 7px solid #0075bf;
    overflow: hidden;
    border-radius: 15px;
}
#screen3 .btn{
    width: 33.5%;
    font-size: 36px;
    text-align: center;
    background-color: #e6e6e6;
    color: #0075bf;
    font-weight: 700;
    padding: 45px 0;
    z-index: 3;
    cursor: pointer;
}
#screen3 .btn3{
    right: 0;
}
#screen3 .btn2{
    left:33%;
}
#screen3 .outer-content .box{
    width:100%;
    height:100%;
}

#screen3 .outer-content .box div {
    font-size: 30px;
    width: 52%;
}
#screen3 .outer-content .box div p{
    margin-left: 63px;
    color: #0075bf;
}
#screen3 .outer-content .box .img1{
    right: 90px;
    top: 167px;
}
#screen3 .outer-content .box .img2{
    right: 90px;
    top: 445px;
}

#screen4 .outer-content{
    width: 1533px;
    height: 810px;
    background-color: #fff;
    border-radius: 14px;
    border: 8px solid #0075bf;
    left: 50%;
    transform: translateX(-50%);
    top: 38%;
}
#screen4 .btn{
    width: 380px;
    bottom:0;
    z-index: 1;
    cursor: pointer;
}
.msg{
    text-align: center;
    width: 100%;
    position:absolute;
    font-size: 25px;
}
#screen4 .btn2{
    right: 50%;
}
#screen4 .btn3{
    right: 25%;
}
#screen4 .btn4{
    right: 0;
}
#screen4 .box{
    width:100%;
    height:100%;
    color:#0075bf;
}
#screen4 .box > img{
    left:50%;
    transform:translateX(-50%);
    top: -146px;
}
#screen4 .box h2{
    text-align:center;
    font-size: 40px;
    font-weight: 700;
    margin-top: 153px;
}
#screen4 .box > div{
    left: 39px;
    top: 220px;
    font-size: 32px;
    width: 46%;
    padding-left :72px;
}
#screen4 .box > div img{
    left:0;
}
#screen4 .box .habitat{
   left: 39px;
   top: 238px;
}
#screen4 .box .season{
   left: 787px;
   top: 238px;
}
#screen4 .box .song{
   left: 39px;
   top: 408px;
}
#screen4 .box .diet{
   left: 787px;
   top: 408px;
}

#screen1 video{
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: translate(-50%, -50%);
    z-index: -1;
}

#screen1 #title{
    text-align: center;
    width: 100%;
    top: 120px;
    font-size: 150px;
    font-weight: 800;
    color: #fff;
}

#screen1 #title2{
    top: 150px;
    width: 100%;
    text-align: center;
    font-size: 150px;
    font-weight: 800;
    color: #0075bf;
}

#screen1 .main-container{
    background-color: #fff;
    border-radius: 25px;
    padding: 30px;
    left: 50%;
    top: 56%;
    transform: translate(-50%, -50%);
    width: 1740px;
    height: 886px;
}

#screen1 p{
    font-size: 2rem;
    text-align: center;
    position: absolute;
    color:#0075bf;
}

#screen1 .content{
    left: 488px;    
    width: 740px;
}
#screen1 .main1{
    width: 430px;
    border-radius: 20px;
}
#screen1 .main2{
    right: 35px;
    width: 430px;
    border-radius: 20px;
}