style.css

/*styling for index.html*/

body {
    background-image:linear-gradient(rgba(0, 0, 0, 0.1),rgba(0,0,0,0.1)),url('images/train5.jpg');
    background-repeat: no-repeat;
    background-position: center center;
    margin: 0;
    padding: 0;
    font-family: 'Times New Roman','Open Sans','Helvetica Neue',Helvetica, sans-serif;
    line-height: 1.45;
    width: 100%;
    height: 100vh;
    background-size: 100% 100%;
    position: relative;
}
header{
  background-color: rgba(0, 0, 0, 0.399); 
  max-width: 100%;
  padding: 30px 0;
  font-family:'Times New Roman', Times, serif;
  text-align: left; 
  color: white;
  font-size: 1.3rem;
}
nav {
    height: 50px;
    width: 100%;
    padding: 10px 0;
}

nav ul {
    display: flex;
    justify-content: flex-start;
    margin: 0px 6px;
    list-style-type: none;
}
nav ul li a {
    color: #fff;
    padding: 10px;
    text-transform: uppercase;
    margin-left: 30px;
    text-decoration: none;
}
nav ul li a:hover,
a.active {
    color: #fff;
    text-decoration: none;
    background-color: #efe3e35b;
    border-radius: 5px;
}
.content-box{ 
  margin: 220px auto;
  padding: 10px 30px 20px 30px;
  max-width: 1000px;
  background-color: rgba(0, 0, 0, 0.399); 
  color: white;
  font-size: 2rem;
}
.content-box a{
    color: #fff;
    padding: 10px;
    text-transform: uppercase;
    margin-left: 30px;
    text-decoration: none;
    background-color: #efe3e35b;
}

.content-box a:hover{
    color: #fff;
    text-decoration: none;
    background-color: #1918185b;
    border-radius: 5px;
}

.clear{
    clear: both;
}

/* styling for about*/
#about{
    margin: 120px auto;
    max-width: 1000px;
    font-size: 2rem;
}

#about p{
    font-size: 1.5rem;
    text-align: center;
}

/* styling for contact*/
#contact{
    margin: 180px auto;
    max-width: 1000px;
    font-size: 1.5rem;
}
#contact p{
    font-size: 1.5rem;
    text-align: justify;
}

form{
    background-color: rgba(1, 1, 1, 0.671);
    color:white;
    padding: 20px;
    padding-bottom: 30px;
    font-size: 1.2rem;
}

.btn{
    color: black;
    padding: 10px;
    background-color: #f5f2f2b9;
    border: none; 
}

.btn:hover{
    color: #fff;
    text-decoration: none;
    background-color: #1918185b;
    border-radius: 5px;
}

.social{
    text-align: center;
}

.social img{
    width: 50px;
    margin: 0 40px;
    cursor: pointer;
}