body{
    margin: 0;
}
.nav {
  background-color: black;
  height: 60px;
  width: 100%;
  position: fixed;
  top: 0;
  z-index: 1000;
  padding: 0 20px;
  display: flex;
  align-items: center;
}

.nav-links {
  list-style: none;
  display: flex;
  

 
}

.nav-links a {
  text-decoration: none;
  color: white;
  margin: 0 15px;
}
.background-image{
    
    background-image: url('download\ \(2\).jpg'); 
    background-size: cover; 
    background-position: center center; 
    background-repeat: no-repeat; 
    height: 100vh; 
    width: 100%;
  
    display: flex;
    flex-direction: column;
   justify-content: center;
    align-items: center;
    color: black;
    float: left;
}
.content{
    background-color: aliceblue;
    width: 350px;
    height: 500px;
    border-radius: 30px;


}
.details{
    padding-left: 60px;

}
.payment{
    padding-left: 60px;
}
.btn{
     color:white; 
     background-color: blue;
      width: 130px;
       height: 30px;
        font-size: medium;
        font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif; 
        border-radius: 20px; 
        cursor: pointer;
        display: inline-block;
        text-align: center;
        text-decoration: none;
        line-height: 30px;
        margin: 0 auto;
        display: block;

}