html,
body {
    width: 100%;
    height: 100%;
    margin: 0px;
    padding: 0px;
    background: #ccc;
    font-family: courier;
}

img {
    display: block;
    width: 30%;
    margin: auto;
    image-rendering: -moz-crisp-edges;
    image-rendering: -o-crisp-edges;
    image-rendering: -webkit-optimize-contrast;
    -ms-interpolation-mode: nearest-neighbor;
}

input,
textarea {
    box-sizing: border-box;
    width: 100%;
}

.main {
    border-radius: 3px;
    box-shadow: 2px 2px 2px #888;
    width: 70%;
    margin-top: 2%;
    margin-bottom: 0px;
    margin-right: auto;
    margin-left: auto;
    padding: 3%;
    background: #fff;
}

.text {
    background: #fff;
    margin: 5%;
}

.navbar {
    text-align: center;
    margin: 10px auto;
}

.NVitem {
    display: inline-block;
    width: 30%;
    height: 30px;
    line-height: 30px;
    text-align: center;
    vertical-align: middle;
    background-color: #666;
    text-decoration: none;
    font-size: 20px;
    color: #fff;
    margin-left: 5px;
    margin-right: 5px;
}

.NVitem:hover {
    background-color: white;
    color: black;
}