header {
    background-color: #00adb5;
    padding: 20px;
    text-align: center;
    font-size: 35px;
    color: white;
}
h1 {
    color: #e7fae4cc;
    text-align: center;
}
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #ffffff;
}
body {
    margin: 0px;
    background-color: #393e46;
    color: white;
}
footer {
    background-color: white;
    text-align: center;
    padding: 10px;
    position: fixed;
    width: 100%;
    bottom: 0;
    color: black;
    height: 35px;
}
sidebar {
    background-color: #222831;
    padding: 15px;
    width: auto;
    float: left;
    height: 100vh;
    box-sizing: border-box;
}
button {
    background-color: #046064b6;
    border: none;
    color: white;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
    border-radius: 4px;
    width: 100%;
}
button:hover {
    background-color: #019ca1;
}
li {
    margin-bottom: 10px;
    color: #f1f1f1;
}
main {
    margin-left: 220px;
    padding: 20px;
}
nav {
    background-color: #00adb5;
    padding: 10px;
    text-align: center;
    border-radius: 10px;
}
div.content {
    margin-top: 20px;
    line-height: 1.6;
}