body {
    background-color: #eee;
}
.card-body {
    position: relative;
    height: 400px;
}
.card-header {
    border-top: 4px solid #ffa900;
}
.chat-box {
    overflow-y: auto;
    height: 380px;
}
.button-addon2 {
    padding-top: .55rem;
}
.logo-img {
    max-width: 230px;
}