.main-box {
position: relative;
margin: 1.2rem auto;
padding: 1rem 2rem;
max-width: 46.5rem;
color: #fff;
font-family: serif;
font-size: 1.3rem;
text-align: justify;
background-color: rgba(45, 59, 146, 0.65);
box-shadow: 0 2px 5px #c5c5c5;
}
.contact {
text-align: left
}
.main-box::before {
content: "";
z-index: -1;
position: absolute;
top: 0;
right: 0;
width: 100%;
height: 100%;
background-image: url(https://upload.wikimedia.org/wikipedia/commons/2/2b/Watts-Strogatz_small-world_model_100nodes.png);
background-size: cover;
background-repeat: no-repeat;
}
.main-box *::selection {
background: rgba(236,236,236,0.35);
}
/* unvisited link */
.main-box a:link {
color: red;
}
/* visited link */
.main-box a:visited {
color: green;
}
/* mouse over link */
.main-box a:hover {
color: hotpink;
}
/* selected link */
.main-box a:active {
color: blue;
}