html,
body {
    padding: 0;
    margin: 0;
    height: 100%;
}
html {
    box-sizing: border-box;
}
*, *:before, *:after {
    box-sizing: inherit;
}
body {
    font-family: Roboto, sans-serif;
}
header {
    position: fixed;
    z-index: 100;
    top: 0px;
    left: 0px;
    width: 100%;
    height: 48px;
    background-color: rgb(32, 32, 32);
    color: white;
    padding: 8px 16px;
    display: flex;
    -webkit-box-align: center;
    align-items: center;
    justify-content: space-between;
}
.header__title {
    display: flex;
    align-items: center;
}
.header__title__suffix {
    margin-left: 8px;
    font-size: 18px;
    color: rgba(255, 255, 255, 0.8);
}
iframe {
    width: 100%;
    height: 100%;
    padding-top: 48px;
}