* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    background-color: black;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100vh;
}

.form-container {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    background-color: rgb(7, 0, 49);
    color: white;
    width: 25rem;
    border-radius: 10px;
    padding: 5em 2rem;
    box-shadow: 0px 0px 20px 0px black;
    border: 1px solid black;
}

.login-title {
    font-size: 2rem;
    margin-bottom: 2rem;
}

.userName,
.userPassword {
    text-align: center;
    border: 2px solid cyan;
    margin: 1rem;
    color: white;
    background: transparent;
    padding: 1rem 2rem;
    border-radius: 3rem;
    width: 15rem;
    font-size: 1.2rem;
    outline: none;
    transition: all .2s ease-in-out;
}

.userName:focus,
.userPassword:focus {
    width: 20rem;
    animation-name: colorChange;
    animation-duration: 10s;
    animation-iteration-count: infinite;
}

@keyframes colorChange {

    0% {
        border-color: green;
        color: green;
    }

    10% {
        border-color: yellow;
        color: yellow;

    }

    20% {
        border-color: hotpink;
        color: hotpink;
    }

    30% {
        border-color: red;
        color: red;
    }

    40% {
        border-color: purple;
        color: purple;
    }

    50% {
        border-color: yellow;
        color: yellow;

    }

    60% {
        border-color: cyan;
        color: cyan;
    }

    70% {
        border-color: skyblue;
        color: skyblue;
    }

    80% {
        border-color: pink;
        color: pink;
    }

    90% {
        border-color: red;
        color: red;
    }

    100% {
        border-color: yellow;
        color: yellow;
    }
}

.loginBtn {
    background: transparent;
    border: 2px solid green;
    padding: 1rem 3rem;
    border-radius: 6rem;
    text-decoration: underline;
    font-size: 1rem;
    color: rgb(255, 255, 255);
    cursor: pointer;
    transition: all .3s ease-in-out;
}

.loginBtn:hover {
    background: rgb(57, 222, 225);
    border: 2px solid rgb(224, 40, 12);
}