body {
    background: url(Tesco.jpg);
    background-size: 100%;
}

#nav {
    margin-top: 50px;
    padding-top: 20px;
    padding-left: 40px;
    font-size: 28px;
    background: #8b6d7d;
    width: 500px;
    height: 600px;
    margin: auto;
    border-radius: 10px;
    opacity: 2;
}

#nav input {
    margin-top: 30px;
    width: 200px;
    height: 40px;
    font-size: 20px;
    border-radius: 5px;
    font-style: italic;
}

#nav input[name="email"] {
    width: 400px
}

#nav input[name="sex"] {
    margin-top: 5px;
    width: 25px;
    font-size: 5px;
}

#nav input[name="agree"] {
    margin-top: 5px;
    width: 20px;
    font-size: 2px;
    font-style: italic;
}

input[type="radio"] {
    margin-top: 5px;
    width: 25px;
    font-size: 15px;
    font-style: italic;
}

input[type="checkbox"] i {
    margin-top: 5px;
    width: 25px;
    font-size: 15px;
    font-style: italic;
}

#nav input[type="submit"] {
    float: right;
    margin-top: 10px;
    width: 25px;
    border-radius: 50px;
    margin-right: 400px;
    height: 50px;
    background-color: red;
    font-style: white;
    font-weight: bold;
}

#nav input[type="submit"]:hover {
    background: white;
    color: blue;
}

.btn {
    margin-top: 20px;
    margin-right: 20px;
    padding: 14px 25px;
    border-radius: 12px;
    font-size: 16px;
    float: right;
}

form button {
    background-color: #b2b2b2;
    /* Green */
    margin-top: 20px;
    margin-right: 20px;
    padding: 14px 25px;
    border: none;
    color: white;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    border-radius: 12px;
    font-size: 16px;
    cursor: pointer;
}