* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    background: lightgrey;
    font-family:arial;
}

.con {
    padding: 18px;
    background: #ace5ff;
    border-radius: 12px;
    width: 600px;
    margin-left: calc(50% - 300px);
    border: 2px solid white;
}

input, textarea {
    width: 100%;
    padding: 12px;
    border-radius: 6px;
    background: white;
    border: none;
    margin-bottom: 12px;
}

.btn {
    padding: 12px;
    background: white;
    border-radius: 6px;
    font-size: 14pt;
    width: 100px;
    text-align: center;
}

.btn:hover {
    background: black;
    cursor:pointer;
    color:white;
}

.output {
    margin-top: 20px;
    font-size: 12pt;
}