.txt{
    padding: 20px;
    background-color: aliceblue;
}

.box1{
    margin: 1em;
}

.video {
    margin-left: auto;
    margin-right: auto;
    padding-left: 50px;
    text-align: center;
    justify-content: center;
    
}

#fond{
    background-color: #96c;
}

 #pp {
    margin: 50px;
    border: 15px double #000;
     font-family: b;
}

.ytb{
  width: 75%;
}

h3{
   border-bottom: 2px solid #96c;
  border-top: 2px solid #96c;
    padding: 10px;

}

.txt h2 {
     margin-left: auto;
    margin-right: auto;

}

.tout{
    width: 75%;
}