* {
    margin: 0;
    box-sizing: border-box;
    padding: 0;
    text-decoration: none;
} 

body {
    display: flex;
    background: black;
    align-items: center;
    justify-content: center;
}

#wrapper {
    margin-top: 20px;
    background: #004400;
    width: 90%;
    min-height: 500px;
}

header{
    border-radius:300px;
    text-align: center;
    margin:20px;
    padding-top:20px;
    background: #007694;
    overflow:hidden;
    box-shadow: 3px 3px 15px black;
}

nav{
    margin-top:20px;
    background:green;
    display:flex;
    justify-content:center;
}

nav a{
    color:black;
    font-size: 30px;
    margin:20px 5%;
}

header h1{
    font-size: 3em;
}

header p{
    font-size: 2em;
}

details {
    border:2px solid black;
    text-align:center;
    width:80%;
    max-width:600px;
    background:#969696;
    margin:auto;
    margin-top:30px;
    margin-bottom:20px;
    box-shadow:3px 3px 10px;
}

details a{
    margin-top:10px;
    display:inline-block;
    font-size:30px;
    color:#006600;
    text-decoration:underline;
    text-decoration-thickness:2px;
}

details a:hover{
    scale: 1.05;
    color:#004400;
}

details p{
    margin:5px;
    margin-bottom:30px;
}

summary{
    border-bottom:2px black solid;
    padding:20px;
    background:gray;
    display:block;
    list-style:none;
    cursor:pointer;
}

a{
    margin-top: 50px;
    font-size: 3em;
    display: block;
    text-align: center;
}

@media screen and (max-width:800px){
    #wrapper{
        width:100vw;
        height:100%;
        margin-top:0px;
    }
}