#startContain
{
display: flex;
width: 95vw;
height: 95vh;
justify-content: center;
align-items: center;
margin-left: 2.5vw;
margin-top: 2.5vh;
/*background-image: url('../masters/lepuzzledelamort.jpg');
background-repeat: no-repeat;
background-size: contain*/;
}