.title{
    color: white;
    text-align: center; 
}

body{
    background-image: url("../img/bg.png");
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
}

.wrapper{
    width: 900px;
    margin: auto;
    padding: 10px;
    display: flex;
}

.vol1{
    width: 400px;
    height: 400px;
    float:left;
    margin: 20px;
    border: 2px solid white;
}

.vol1 img {
    width: 400px;
}

.vol2{
    width: 400px;
    height: 400px;
    float: left;
    margin: 20px;
    border: 2px solid white;
}

.vol2 img {
    width: 400px;
}