Bird.css

@import url('https://fonts.googleapis.com/css2?family=Bungee+Spice&family=Danfo&family=Jacquard+12&family=Jaro:opsz@6..72&family=Poetsen+One&family=Sora:wght@100..800&display=swap');
body{
    font-family: "Jaro", sans-serif;
    background-color: bisque;
}
.container{
    background-color: black;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    width: 1000px;
    height: 600px;
    overflow: hidden;
}
.header{
    position: absolute;
    color: rgb(255, 255, 255) ;
    width: 100%;
    margin: 10px 30px;
    z-index: 212112;
}
.logo{
    width: 40px;
    border-radius: 50%;
    height: 40px;
    display: inline-block;
}
.header ul{
    padding: 0;
    margin: 0;
    list-style: none;
    display: inline-block;
    transform: translate(0,-14px);
}
.header ul li{
    display: inline-block;
    font-size: 13px;
    margin-left: 20px;
}
#bird{
    position: absolute;
    z-index: 11111111;
    right: 50%;
    bottom: 25%;
    transition: 1.5s;
    transform: rotateX(192deg) rotate(-40deg);
}
#bird img{
    width: 350px;
    animation: bird 1s ease-in-out infinite alternate;
}
@keyframes bird{
    0%{
        transform: rotate(5deg);
    }
    100%{
        transform: rotate(0deg);
    }
}
.item{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 5;
    display: none;
}
.item img{
    width: 100%;
    height: 100%;
    object-fit: cover ;
    opacity: 0.3;
}
.item .content{
    position: absolute;
    bottom: 0;
    right: 0;
    padding:20px 40px 30px 0;
    color:white;
}
.item h2{
    font-family:'Sora' ;
    font-size: 30px;
}
.item .content1{
    margin-top: 30px ;
    padding: 0;
}
.item .button{
    margin: 30px 0;
    border: 1px solid beige;
    width: max-content;
    padding: 10px 20px;
    transition: 0.7s;
    border-radius: 7px;
}
.item .button:hover{
    background-color: rgb(10, 37, 10);
    color: white;
} 
.active, .hide{
    display: block;
}
.active{
    z-index: 1111;
}
.active img{
    animation: showing 1s ease-in-out 1 forwards;
}
.hide img{
    animation: hideing 1s ease-in-out 1 forwards;
}
@keyframes showing{
    0%{
        transform: translate(100%,0);
    } 100%{
        transform: translate(0,0);
    }
}
@keyframes hideing{
    0%{
        transform: translate(0,0);
    } 100%{
        transform: translate(-100%,0);
    }
}
.active .content h2{
    opacity: 0;
    animation: showcontent 0.7s ease-in-out 1s 1 forwards
}
.active .content1{
    opacity: 0;
    animation: showcontent 0.7s ease-in-out 1.2s 1 forwards
}
.active .button{
    opacity: 0;
    animation: showcontent 0.7s ease-in-out 1.4s 1 forwards
}
@keyframes showcontent{
    0%{
        filter: blur(33px);
        transform: translate(100%,0);
    } 100%{
        opacity: 1;
        filter: blur(0px);
        transform: translate(0,0);
    }
}
.hide h2,
.hide .content,
.hide .button{
    animation: hidecontent 1.7s ease-in-out 1 forwards;
}
@keyframes hidecontent{
    0%{
        filter: blur(0px);
        transform: translate(0,0);
    } 100%{
        opacity: 0;
        filter: blur(33px);
        transform: translate(-100%,0);
    }
}
.start #bird{
    animation: startbird 3s ease-in-out 1 forwards;
}
@keyframes startbird{
    0%{
    
    } 50%{
        right: 31%;
        bottom: 16%;
        transform: rotateY(192deg) rotate(-92deg);
    } 100%{
        right: 50%;
        bottom: 25%;
        transform: rotateX(192deg) rotate(-40deg);
    }
}
#next{
    position: absolute;
    z-index: 111111111111111;
    bottom: 0;
    left: 0;
    padding: 20px;
    border: none;
    background-color: rgb(0, 48, 0);
    transition: 0.5s;
    color: white;
    border-radius: 20px;
}
#next:hover{
    background-color: goldenrod;
    color: white;
}
.start::before{
    position: absolute;
    width: 100%;
    height: 4px;
    content: '';
    background-color: orangered;
    z-index: 11111111;
    animation: time 3s ease-in-out 1 forwards;
}
@keyframes time{
    from{
        width: 0;
    } to{
        width: 100%;
    }
}