html, body {
    margin: 0;
    box-sizing: border-box;
}

header {
    padding: 20px;
    width: 85%;
    margin: auto;
    display: flex;
}

nav {
    padding: 20px;
    box-shadow: 0 1px 5px lightgray;
    display: flex;
    justify-content: space-between;
}
main {
    width: 60%;
    margin: auto;
}
.box {
    background-color: #e3e3e3;
    padding: 20px;
    border-radius: 4px;
    margin-top: 15px;
    margin-bottom: 30px;
}
.box > textarea {
    resize: none;
}
.logoBg {
    background-color: #2b2b2b;
    padding: 8px;
    border-radius: 6px;
}
.app-frame {
    width: 100%;
}

footer {
    background-color: black;
    padding: 25px;
    color: white;
    margin: 0;
}
footer > h2 {
    margin-top: 0;
    margin-bottom: 3px;
}