html {
    height: 100%;
}

body {
    margin: 0;
    padding: 0;
    font-family: sans-serif;
    background-image: radial-gradient(#acddff, #003357);
    /*background: linear-gradient(#004878, #80cbfd);*/
}

.login-box {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 400px;
    padding: 40px;
    transform: translate(-50%, -50%);
    /*background: rgba(0,0,0,.5);*/
    box-sizing: border-box;
    box-shadow: inset 0px 1px 20px 0px rgb(34 47 52 / 60%);
    /*border: 1px solid #78bff0;*/
    border-radius: 00px;
    /*0.5px 0.5px 0.5px 0.5px rgb(250 250 250 / 60%);*/
}

    .login-box h2  {
        margin: 0 0 30px;
        padding: 0;
        color: #fff;
        text-align: center;
    }
    .login-box img {
        width: 200px;
        height: 170px;
        padding-left: 40px;
        margin: 20px;
        /*margin: 0 0 30px;*/
        /* padding: 0;
        color: #fff;
        text-align: center;*/
    }
    .login-box .user-box {
        position: relative;
    }

        .login-box .user-box input {
            width: 100%;
            padding: 20px 0;
            font-size: 26px;
            color: #fff;
            margin-bottom: 30px;
            color-scheme: dark;
            border: none;
            border-bottom: 1px solid #fff;
            outline: none;
            background: transparent;
        }

        .login-box .user-box label {
            position: absolute;
            top: 0;
            right: 0;
            padding: 20px 0;
            font-size: 26px;
            color: #fff;
            pointer-events: none;
            transition: .5s;
        }

        .login-box .user-box input:focus ~ label,
        .login-box .user-box input:valid ~ label {
            top: -20px;
            right: 0;
            color: #fff;
            font-size: 22px;
            color-scheme:dark;
        }
    /*.login-box form a*/
    .logina {
        position: relative;
        display: inline-block;
        padding: 9px 124px;
        color: #ffffff;
        font-size: 26px;
        text-decoration: none;
        text-transform: uppercase;
        overflow: hidden;
        transition: .5s;
        margin-top: -9px;
        /*letter-spacing: 4px;*/
        background: #e67d11;
        cursor: pointer;
    }

    .login-box a:hover {
        background: #EFF1EF;
        color: #ff6a00;
        border-radius: 5px;
        box-shadow: 0 0 5px #8B8B9B, 0 0 5px #8B8B9B, 0 0 5px #8B8B9B, 0 0 10px #8B8B9B;
        cursor: pointer;
    }

    .login-box a span {
        position: absolute;
        display: block;
    }

        .login-box a span:nth-child(1) {
            top: 0;
            left: -100%;
            width: 100%;
            height: 2px;
            cursor: pointer;
            background: linear-gradient(90deg, transparent, #fff);
            animation: btn-anim1 1s linear infinite;
        }

@keyframes btn-anim1 {
    0% {
        left: -100%;
    }

    50%,100% {
        left: 100%;
    }
}

.login-box a span:nth-child(2) {
    top: -100%;
    right: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, transparent, #0fff);
    animation: btn-anim2 1s linear infinite;
    animation-delay: .25s
}

@keyframes btn-anim2 {
    0% {
        top: -100%;
    }

    50%,100% {
        top: 100%;
    }
}

.login-box a span:nth-child(3) {
    bottom: 0;
    right: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(270deg, transparent, #fff);
    animation: btn-anim3 1s linear infinite;
    animation-delay: .5s
}

@keyframes btn-anim3 {
    0% {
        right: -100%;
    }

    50%,100% {
        right: 100%;
    }
}

.login-box a span:nth-child(4) {
    bottom: -100%;
    left: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(360deg, transparent, #004878);
    animation: btn-anim4 1s linear infinite;
    animation-delay: .75s
}

@keyframes btn-anim4 {
    0% {
        bottom: -100%;
    }

    50%,100% {
        bottom: 100%;
    }
}