body {
    display: grid;
    grid-template-columns: 200px 1fr;
    grid-template-rows: auto 1fr;
    height: 100vh;
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
}

header {
    grid-column: 1 / -1;
    height: 3rem;
    padding: 1rem;
    background-color: #0b0d11;
    text-align: center;
    color: white;

    & h1 {
        margin: 0;
    }
}

aside {
    padding: 1rem;

    & h2 {
        margin-top: 0;
    }

    & ul {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    & li {
        display: block;
        margin-top: 1rem;
        padding: .5rem 1rem;
        background-color: #aff5b4;
        border-radius: .5rem;
    }
}

main {
    display: grid;
    grid-template-rows: 1fr auto;
    height: calc(100vh - 7rem);
    padding: 1rem;
    background-color: #f0f0f0;
}

form {
    align-self: flex-end;
    display: flex;
    align-items: stretch;
    margin: 0;
}

input {
    width: 100%;
    padding: .5rem 1rem;
    border: 1px solid #0b0d11;
    border-radius: .5rem;
    resize: none;
}

button {
    margin-left: 1rem;
    padding: .5rem 1rem;
    border-radius: .5rem;
    border: none;
    white-space: nowrap;
    background-color: #75fead;
    color: #0b0d11;
    cursor: pointer;
}

#conversation {
    display: flex; 
    flex-direction: column-reverse; 
    overflow-y: scroll;

    & div {
        padding: .5rem 1rem;
        margin-bottom: 1rem;
        border-radius: .5rem;
        background-color: white;
        & p {
            margin: 0;
        }
        & span {
            display: block;
            margin-bottom: .5rem;
            font-weight: bold;
        }
    }
}