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

body {
    background-color: #0080ff;
}

form {
    width: min(90%,25em);
    background-color: aliceblue;
    position: absolute;
    transform: translate(-50%, -50%);
    top: 50%;
    left: 50%;
    padding: 5em 2em;
    border-radius: 0.5em;
    box-shadow: 0px 0px 20px rgba(0, 0, 0, 0.3);
}

.error-message {
    color: #ff3434;
    visibility: hidden; 
    transition: visibility 0.3s ease;
}

input, button {
    display: block;
    width: 100%;
    padding: 1em;
    outline: none;
    color: white;
    border: none;
    border-radius: 0.3em;
    transition: background-color 0.3s ease;
}

input {
    background-color: #e2e2e2;
    color: #4CAF50;
    border: 1px solid darkblue;
}

button {
    background-color: #0080ff;
    margin-top: 2.5em;
    cursor: pointer;
}

.shake {
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-5px);
    }
    50% {
        transform: translateX(5px);
    }
    75% {
        transform: translateX(-5px);
    }
    100% {
        transform: translateX(0px);
    }

}