.stil1 {
    color: red;
}

.navbar-brand.logo img {
  width: 300px;   /* or your desired width */
  height: auto;   /* keeps aspect ratio */
}

.test {
    color: red;
}

.container.espace1 {
    margin-bottom: 50px;
}

.espace2 {
    height: 120px;
}