baniére.css

.baniére{ 
  background-image: url("Images/baniére.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  /* opacity: 0.3; */
  background-attachment: fixed;
  size: 100px;
  width: 100%;
  height: 100%;
  color: white;
  
  
}
.text{

  padding-top: 100px;
  width: 500px;
  padding-left: 200px;
  padding-bottom: 200px;
  color: white;

}
*, ::before, ::after
 {
  box-sizing: border-box;
  margin:0px;
  padding: 0px;
 }
.btn 
 {
  display: block;
  margin: 80px auto 0;
  font-size: 20px;
  font-weight: lighter;
 color: white;
  padding: 5px 8px;
  box-shadow: 0 4px#CE0033;
  background:#CE0033 ;
  outline: none;
  border: none;
  cursor: pointer;
  border-radius: 15px;
  position: relative right;
  box-shadow: 0 6px#CE0033;
  
 }
 .btn:hover 
 { 
   box-shadow: 0 4px #fafafa;
  top: 2px;
 } 
.btn:active {
  box-shadow: 0 4px#CE0033;
  box-shadow: 0 0 ;
  top: 6px;
 }