html {
    scroll-behavior: smooth;
    font-family: Helvetica, sans-serif, Arial;
}

body {
    margin: 0 auto;
    background-color: #222;
}

.chat-btn{
    position: fixed;
    right:50px;
    bottom: 50px;
    background: dodgerblue;
    color: white;
    width:60px;
    height: 60px;
    border-radius: 50%;
    opacity: 0.8;
    transition: opacity 0.3s;
    box-shadow: 0 5px 5px rgba(0,0,0,0.4);
}

button{
    border:none;
    outline: none;
    cursor: pointer;
}