@keyframes fadeInAnimation {
    0% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}

body {
    margin: 0;
    background: #222;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    animation-iteration-count: 1;
    animation-fill-mode: forwards;
}

form {
    display: flex;
    justify-content: center;
    margin-top: 9em;
}

form input {
    background: none;
    font-family: inherit;
    padding: 0px 17px;
    height: 48px;
    border: 1px solid rgb(255, 255, 255, .2);
    color: var(--text-color);
    border-radius: 3px;
    outline: none;
    width: 350px;
    margin-top: 5px;
    border-radius: 50px;
    color: #FFF;
    background-color: #111;
}

form input:focus {
    border: 1px solid rgba(253, 253, 253, 0.514);
    border-radius: 6px;
    animation: fadeInAnimation ease-in-out 0.3s;
    animation-iteration-count: 1;
    animation-fill-mode: forwards;
}