html {
    margin: 0;
    padding: 0;
    font-size: 10px;
    height: 100%;
    width: 100%;
    box-sizing: border-box;
}
body {
    margin: 0;
    padding: 0;
    font-size: 2rem;
    height: 100%;
}
body::-webkit-scrollbar { display: none; }

div { text-align: center }
a { text-decoration: none; }

.wrap {
    height: 100%;
} 

.header {
    background: black;
    color: #ebebeb;
    font-size: 2.5rem;
    padding: 1.5rem;
    display: block;
    width: 95vw;
}
.header .header-wrap {
    margin: auto;
    display: flex;
    justify-content: space-between;
    text-align: center;
}
.header a { color: #ebebeb }
.header-wrap div form { margin: 0 }

#hamburger, .menu { display: none; }
label {
    padding: 0.5rem;
    cursor: pointer;
}
#hamburger:checked ~ div.menu { display: block; }

.menu { padding: 0.7rem 1.2rem 0.7rem 0.7rem; }
.menu div { padding: 1rem; }

#logout {
    background: none;
    border: 0px;
    object-fit: contain;
    width: 100%;
    margin: 0;
    padding: 0;
}

.main {
    max-width: 80rem;
    margin: 3rem auto;
    height: 65vh;
}

@media (min-width: 768px) {
    .header {
        font-size: 1.5rem;
        width: 500px;
        margin: auto;
        padding: 1rem;
    }
    .main {
        width: 500px; 
        margin: auto;
    }
}