student4.css

* {
  box-sizing: border-box;
  font-family: "Rubik", sans-serif;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  line-height: 1;
}
/********************* nav bar******************/

.navbar {
  list-style-type: none;
  padding: 0;
  overflow: hidden;
  background-image: url("/images/navbar_back.png");
  background-repeat: no-repeat;
  background-size: 100%;
  position: fixed;
  top: 0;
  left: 10%;
  right: 10%;
  text-align: center;
  font-family: "Rubik", sans-serif;
  font-weight: bolder;
  font-size: smaller;
  width: 75%;
  margin: auto auto;
  border-width: 10%;
  border-color: black;
  border-radius: 5%;
}

.navbar li {
  display: inline-block;
}

.navbar li a {
  display: block;
  color: #333;
  text-align: center;
  padding: 14px 16px;
  text-decoration: solid;
  font-size: 150%;
  color: white;
  float: left;
}

.navbar a:hover {
  border-radius: 5%;
}

a {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
}

.coverimg {
  margin-top: 100px;
}
.coverimage {
  width: 100%;
}

.content {
  font-size: 70px;
  text-align: center;
  margin: 2px;
}
.content1 {
  font-size: 50px;
  text-align: center;
  margin: 2px;
}
hr {
  width: 100%;
  align-items: center;
}
.paragraph {
  margin-top: 2%;
  margin-left: 7%;
  margin-right: 7%;
  font-size: 24px;
}

.column {
  float: left;
  width: 50%;
  padding: 50px;
}

/* Clearfix (clear floats) */
.row::after {
  content: "";
  clear: both;
  display: table;
}
.description {
  text-align: justify;
}

@media screen and (max-width: 700px) {
  .box {
    width: 70%;
  }
  .popup {
    width: 70%;
  }
}