@import url('https://fonts.googleapis.com/css?family=Open+Sans&display=swap');

:root {
    --error-color: #dc3545;
    --success-color: #28a745;
    --warning-color: #ffc107;
}

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


body {
    font-family: 'Open Sans', sans-serif;
    font-size: 16px;
    background-color: #f4f4f4;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

.container {
    background-color: #fff;
    padding: 1em;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
    width: 400px;
}

.form {
    padding: 10px 20px;
}

.form h1 {
    font-size: 1.5em;
    text-align: center;
    margin-bottom: 20px;

}

.form-field {
    margin-bottom: 5px;

}

.form-field label {
    display: block;
    color: #777;
    margin-bottom: 5px;
}

.form-field input {
    border: solid 2px #f0f0f0;
    border-radius: 3px;
    padding: 10px;
    margin-bottom: 5px;
    font-size: 14px;
    display: block;
    width: 100%;
}

.form-field input:focus {
    outline: none;
}

.form-field.error input {
    border-color: var(--error-color);
}

.form-field.success input {
    border-color: var(--success-color);
}


.form-field small {
    color: var(--error-color);
}


/* button */
.btn {
    width: 100%;
    padding: 3%;
    background: #007bff;
    border-bottom: 2px solid #007bff;
    border-top-style: none;
    border-right-style: none;
    border-left-style: none;
    color: #fff;
    text-transform: uppercase;
}

.btn:hover {
    background: #0069d9;
    cursor: pointer;
}

.btn:focus {
    outline: none;
}