* {
    font-family: 'Pretendard', 'sans-serif';
    font-size: 20px;
}

body {
    background: url(background.gif) repeat center center/cover;
    font-family: Arial, sans-serif;
}

.big-container {
    display: flex;
    justify-content: space-between;
}

.container {
    width: 48vw;
    display: flex;
    flex-direction: column;
    justify-items: center;
}

.chat-box {
    height: 100%;
}

.message {
    background-color: #f0f0f0;
    padding: 20px 10px;
    border-radius: 10px;
    margin: 5px 0;
    animation: fadeIn 1s ease-in-out;
}

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

button {
    background-color: #f0f0f0;
    padding: 5px 10px;
    border-radius: 10px;
    margin: 5px 0;
}

button:hover {
    background-color: #8e8e8e;
    padding: 5px 10px;
    border-radius: 10px;
    margin: 5px 0;
}

nav {
    width: 98%;
    padding: 1%;
    display: flex;
    justify-content: space-between;
    background-color: rgb(73, 73, 73);
    border-radius: 10px;
    color: white;
}

nav a {
    color: white;
}

nav a:hover {
    color: yellow;
}