.body_fond{
    background-image: url('../images/backgrounds/fond_presentation.png'); 
    background-size: cover; 
    background-repeat: no-repeat; 
    background-position: center;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

h1{
  padding-top:50px;
  text-align: center;
}


.case_presentation {
  background-color: #e74e0f99;
  border: 1px solid #e74e0f;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  border-radius: 10px;
  padding: 20px;
  margin: 20px auto;
  max-width: 800px;
}

.lien_contact {
  color: #ffffff !important;
}