* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    font-family: "Arial";
    gap: 16px;
    background-color: #1f2223;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 99;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 30px 90px;
    font-size: 22px;
    color: white;
    opacity: 1;
    animation: to-bottom 1s ease forwards;
}

header nav a {
    font-size: 26px;
    margin-left: 78px;
    color: white;
    transition: .3s;
    text-decoration: none;
}

header nav .active,
header nav a:hover {
    color: #01fa04;
}

.login {
    display: flex;
    flex-direction: column;
    justify-content: center;
    background-color: #C0C0C0;
    width: 400px;
    height: 440px;
    border-radius: 16px;
    box-shadow: 4px 4px 12px #aaaaaa;
    opacity: 0.9;

}

.login input {
    opacity: 0.3;
}

.btn {
    display: flex;
    margin-left: auto;
    margin-right: auto;
    align-items: center;
    justify-content: center;
    width: 40%;
    border-radius: 4px;
    height: 40px;
    background-color: rgb(56, 51, 51);
    cursor: pointer;
    transition: .3s;
    animation: to-right 1s ease forwards 1.9s;
}

.btn:hover,
.btn:nth-child(2) {
    color: black;
    background-color: rgb(119, 113, 113);
    box-shadow: 0 0 15px gray;
}

.btn:nth-child(2):hover {
    color: white;
    background: transparent;
    box-shadow: none;
}

.objects {
    position: absolute;
    left: auto;
    top: auto;
    transform: translate(-50% -50%);
    width: 45%;
    animation: rotate 25s linear infinite, fade-in 1s ease forwards 1.2s;
    z-index: -99;
}

@keyframes fade-in {
    0% {
        opacity: 0;
    }

    100% {
        opacity: 1;
    }
}

@keyframes rotate {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

@keyframes hue-rotate {
    0% {
        filter: hue-rotate(0deg);
    }

    100% {
        filter: hue-rotate(360deg);
    }
}

@keyframes to-bottom {
    0% {
        opacity: 0;
        transform: translateY(-50px);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

body {
    animation: hue-rotate 28s linear infinite;
}