html,body {
    padding: 0;
    margin: 0;
}

html {
    overflow-x: hidden;
}

#header-img {
    width: 80px;
    margin: 10px 0px 10px 60px;
}

header a {
    font-weight: bold;
    color: #000;
}

header {
    background: yellowgreen;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
}

footer {
    background: black;
}

[type='email']{
    width: 400px;
    margin: auto;
}