html {
    background-image: url(../img/web.jpg);
    background-position: top center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
    display: flex;
    font-family: 'Open Sans', sans-serif;
    align-items: center;
    justify-content: center;
    min-height: 100%;
}

body {
    min-height: 100%;
    display: flex;
    align-self: center;
}

html, body {
    margin: 0;
    padding: 0;
}

* {
    box-sizing: border-box;
    text-align: center;
}

.center-div::-webkit-scrollbar {
    width: 0; /* remove scrollbar space */
    background: transparent; /* optional: just make scrollbar invisible */
}

.center-div::-webkit-scrollbar-thumb {
    background: #FF0000;
}

.center-div {
    align-self: center;
    overflow-y: scroll;
    -ms-overflow-style: none;
    overflow: -moz-scrollbars-none;
    margin: auto;
    text-shadow: 0 0 1px black;
    max-width: 600px;
    padding: 20px;
    min-height: 300px;
    background-color: rgba(0, 0, 0, 0);
    color: black;
    text-align: justify;
    text-align-last: center;
}

a:link {
    color: #000;
    text-decoration: none;
}

a:visited {
    text-decoration: none;
    color: #000;
}

a:hover {
    text-decoration: none;
    color: #000;
}

.myButton {
    cursor: pointer;
}

a:active {
    text-decoration: none;
    color: #000;
}

h1 {
    font-size: 2em;
}

h2 {
    font-size: 0.9em;
}

.popup {
    position: absolute;
    width: 100%;
    height: 100%;
    display: none;
    z-index: 500;
    top: 0;
    left: 0;
}

.popup.opened {
    display: block;
}

.popup-body {
    background: #ededed;  
    width: 300px;
    text-shadow: 0 0 1px black;
    margin: 100px auto;
    padding: 20px;
    position: relative;
    box-sizing: border-box;
}

.info-wrap {
    text-align: center;
}