body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 16px;
    margin: 10%;
    background: #e7faff;
    color: rgb(0, 38, 63);
}

h1 {
    text-align: center;
    font-size: 1.6rem;
}

#messages-block {
    border: 1px solid #ccc;
    padding: 10px;
    height: 300px;
    overflow-y: scroll;
    background: #fff;
    margin-bottom: 20px;
}

#messages-block div {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

form {
    display: flex;
    gap: 10px;
    justify-content: center;
}

#chat-form-block input {
    border: 0.5px solid rgb(0, 116, 131);
    padding: 10px;
    font-size: 16px;
}

#chat-form-block button {
    background-color: rgb(0, 116, 131);
    color: #fff;
    transition: background-color 0.8s;
    width: 10vw;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
}

#chat-form-block button:hover {
    background-color: rgb(117, 239, 255);
    color: rgb(1, 55, 92);
}

@media (max-width: 560px) {
    form {
        flex-direction: column;
        align-items: center
    }

    #chat-form-block button {
        width: 30vw;
        padding: 10px;
    }
}