body {
    background-color: black;
    font-family: Arial, Helvetica, sans-serif;
}

header {
    color: white;
    margin-bottom: 30px;
    border-style: solid;
    border-top-width: 0px;
    border-left-width: 0px;
    border-right-width: 0px;
    border-bottom-width: 5px;
}

.title-header {
    font-size: 40pt;
}

nav {
    border-color: white;
    border-width: 3px;
    border-style: dotted;
    padding: 10px;
}

.iframe1 {
    width: 90%;
    height: 1050px;
    margin-top: 20px;
}

a {
    color: White;
    text-decoration: overline;
    font-size: 20pt;
}

a:hover {
    color: lightgray;
    text-decoration: underline;
}

@media only screen and (max-width: 700px) {

    .title-header {
        font-size: 20pt;
    }
    
    a {
        font-size: 15pt;
    }
}