body {
    margin: 0;
}

header {
    display: flex;
    min-height: 60px;
    background: #333;
    color: #fff;
    text-align: center;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hamburger {
    text-align: center !important;
    right: 0;
    top: 0;
    width: 60px;
    height: 60px;
    position: fixed;
    cursor: pointer;
    z-index: 2000;
    background-color: #333;
}

.hamburger span {
    display: block;
    background-color: #f9f9f9;
    position: absolute;
    width: 24px;
    height: 2px;
    left: 20px;
    line-height: 1;
    -webkit-transition: 0.3s ease-in-out;
    -moz-transition: 0.3s ease-in-out;
    transition: 0.3s ease-in-out;
    transform-origin: 0% 50%;
}

.hamburger span:nth-of-type(1) {
    top: 20px;
}
.hamburger span:nth-of-type(2) {
    top: 30px;
}
.hamburger span:nth-of-type(3) {
    top: 40px;
}

.navbar {
    position: fixed;
    top: 0;
    right: -250px;
    width: 250px;
    height: 100%;
    background: #333;
    transition: right 0.3s ease-in-out;
    z-index: 1000;
    padding-top: 60px;
}

.navbar a {
    display: block;
    padding: 15px;
    color: #fff;
    text-decoration: none;
}

.hidden {
    opacity: 0;
    visibility: hidden;
}

.container {
    text-align: center;
}

h1 {
    color: #f9f9f9;
}
li {
    list-style-type: none;
    text-align: left;
}
li a {
    /* text-decoration: underline; */
    color: black;
}