.Ma-section {
  width: 100%;
  display: flex;
  flex-direction: column;
  position: relative;
  background-color: #433416;
  min-height: 900px;
  overflow: hidden;
}

.Un {
  position: absolute;
  top: 10px;
  width: 50%;
  height: 400px;
  background: #fec;
  display: block;
  left: 136px;
  bottom: 10px;
}

.Deux {
  position: absolute;
  top: 30%;
  width: 50%;
  height: 350px;
  background: #333;
  right: 136px;
  display: block;
}

.Trois {
  position: absolute;
  top: 66%;
  width: 50%;
  height: 290px;
  background: #772d2d;
  display: block;
  left: 25%;
  bottom: 30px;
}

@media (max-width:768px),(max-width:300px) {
  .Ma-section {
    width: 100%;
    height: 1076px;
  }
}

@media (max-width:768px),(max-width:300px) {
  .Ma-section .Un {
    margin: 0 auto;
    width: 100%;
    margin-top: 10px;
    left: 0;
  }
}

@media (max-width:768px),(max-width:300px) {
  .Ma-section .Deux {
    margin: 0 auto;
    width: 100%;
    margin: 10px auto;
    top: 400px;
    left: 0;
    right: 0;
  }
}

@media (max-width:768px),(max-width:300px) {
  .Ma-section .Trois {
    margin: 0 auto;
    width: 90%;
    margin: 10px auto;
    top: 756px;
    left: 0;
    right: 0;
  }
}

.Un, .Deux, .Trois {
  display: flex;
}

@media (max-width:3500px),(max-width:300px) {
  .Un {
    background: url("../../assets/img/upper2.jpg");
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    border-radius: 45px;
  }
}

@media (max-width:3500px),(max-width:300px) {
  .Deux {
    background: url("../../assets/img/upper1.jpg");
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    border-radius: 45px;
  }
}

@media (max-width:3500px),(max-width:300px) {
  .Trois {
    background: url("../../assets/img/upper3.jpg");
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    border-radius: 45px;
  }
}