@import url("https://fonts.googleapis.com/css2?family=PT+Serif&family=Poppins:wght@200&display=swap");

body,
html {
    margin: 0;
    background-color: #222;
    color: #aaa;
    font-family: "Poppins", sans-serif;
    font-size: 0
}

.full-height {
    height: 100vh
}

.flex-center {
    align-items: center;
    display: flex;
    justify-content: center
}

#error_text {
    font-size: 32px
}

button {
    display: inline-block;
    padding: 10px 20px;
    background-color: #2b3031;
    border: none;
    color: #fff;
    border-radius: 4px;
    margin-top: 10px;
    font-size: 16px;
    cursor: pointer;
    transition: all .3s ease-in-out
}

button:hover {
    background-color: #555
}