body{
    background-color: black;
}
.wrapper{
    width: 100%;
}
img{
    width: 30%;
    display: block;
    max-width: 500px;
    min-width: 350px;
    margin-left: auto;
    margin-right: auto;
}
h2{
    text-align: center;
    font-size: 1em;
    color: #ffffff;
}
.button{
    border: 4px solid red;
    background-color: #cccccc;
    font-size: 1.5em;
    color: #0000ff;
    text-decoration: none;
    transition: 900ms;
    padding: 5px 15px 5px 15px;
}
.btn{
    border-color: red;
    color: #0000ff;
}
.btn:hover, btn:focus{
    background-color: red;
    border-radius: 20px;
    color: #ffff00;
    font-weight: bold;
}
.center{
    display: block;
    text-align: center;
}