.container{
    width: 400px;
    margin: 0 auto;
    width: 400px;
}

.content{
    padding: 5px;
    border: 2px solid gray;
    border-radius: 3px;
    margin-bottom:10px;
}

.element{
    margin-bottom: 10px;
}

h1{
    background: lightgreen;
    color: white;
    font-family: sans-serif;
    font-weight: normal;
    padding: 5px 10px;
    margin-top: 0;
}

/* Textbox */
input[type='text'],input[type='email']{
    padding: 5px 10px;
    width: 94%;
    font-size: 15px;
    letter-spacing: 1px;
}

/* Button */
input[type='button']{
    background: orange;
    color: white;
    padding: 5px 10px;
    font-size: 16px;
    font-weight: bold;
    border: 0;
}

.details{
    display: none;
}