style.css

@import url('https://fonts.googleapis.com/css?family=Open+Sans:400,700');

body {
    background-color: #23252C;
    font-family: 'Open Sans', sans-serif;
    text-align: center;
    margin: 0;
}

h1, h2, h3, h4, h5, h6 {
    color: #F7F8F8;
}

header {
    width: 100%;
    height: 15px;
    background-color: #01CEA2;
}

header > button {
    float: right;
    color: #23252C;
    background-color: #F7F8F8;
    border: 1px solid #F7F8F8;
    margin-right: 10px;
    height: 15px;
    font-size: 0.6em;
    outline: none;
}

header > button:hover {
    border: 1px solid #01CEA2;
}

.FormWifi > input, .StopWifi {
    width: 75%;
    height: 35px;
    text-align: left;
    outline: none;
    padding: 10px;
    margin: 7px;
    border: 1px solid #F7F8F8;
    border-radius: 3px;
    background-color: #F7F8F8;
    box-shadow: 3px 3px 3px rgba(68,68,68,0.6);
    transition: all ease;
    transition-duration: 175ms;
}

.FormWifi > input:hover, .StopWifi:hover {
    box-shadow: 5px 5px 5px rgba(68,68,68,0.6);
    width: 78%;
}

.FormWifi > input[type='submit'], .StopWifi {
    background-color: #01CEA2;
    border: 1px solid #01CEA2;
    text-align: center;
    cursor: pointer;
    color: #303841;
    font-weight: bold;
}

footer > p {
    font-size: 0.55em;
    color: #F7F8F8;
}

hr {
    border: 1px solid transparent;
    border-bottom-color: #01CEA2;
    background-color: transparent;
    height: 1px;
}