* {
    box-sizing: border-box;
}

html, body {
    font-size: 16px;
    height: 100%;
    background-image: url('../img/fond.jpg');
    background-size: cover;
}

.col-xl-4, .col-md-6, .col-10 {
    padding: 30px 30px 30px 30px;
    text-align: center;
    background-color: white;
    border-radius: 10px;
}

.col-xl-4, .col-md-6, .col-10 {
    margin-top: auto;
}

img {
    max-width: 100px;
    margin: 10px 0 10px 0;
}

h1 {
    font-size: 1.3rem;
}

p {
    font-size: 1.2rem;
}

form {
    margin: 20px 0 20px 0;
}

.mb-3 {
    text-align: left;
    color: black;
}

.btn {
    width: 50%;
}

@media only screen and (min-width: 745px) {
    
    body {
        background-image: url('../img/fond.jpg');
        background-size: cover; 
    }

}