html {
    font-family: 'Open Sans', sans-serif;
    font-weight: 400;
    font-size: 14px;
    line-height: 1.2;
    color: #fff;
    background: #c00;
}

.hide {
    display: none;
}

.faded {
    opacity: 0.4;
}

.btn:hover {
    cursor: pointer;
}

#frame {
    width: 840px;
    height: 472px;
    margin: auto;
    position: relative;
}

.border {
    box-sizing: border-box;
    border: solid 3px #000;
    border-top-left-radius: 20px;
    border-bottom-right-radius: 20px;
    overflow: hidden;
}