* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: #111;
    color: #FFF;

    -webkit-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

body {
    margin: 0 auto;
    padding: 20px;
    text-align: center;
}

#mainHeading {
    font-size: 40px;
}

#click {
    padding: 8px;
}

#inputText {
    padding: 8px;
    width: 250px;
}

/* Color Changing Code */
.box {
    width: 200px;
    height: 200px;
    background-color: #3498db;
    color: white;
    text-align: center;
    line-height: 200px;
    margin: 20px auto;
}
.box:hover {
    background-color: #a65bf7;
    transition: 0.3s;
}
.button {
    font-weight: bold;
    width: 95px;
    height: 30px;
    background-color: #FFC640;
    color: #111;
    text-align: center;
    font-family: Arial, sans-serif;
    margin: 10px auto;
}
.button:hover {
    background-color: #FFB300;
    transition: 0.3s;
}