styles.css

/* Global Layout Set-up */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  text-align: center;
  font-family: 'Rajdhani', sans-serif;
  font-size: 1em;
  color: #000;
  background: #f7f5f0;
}
h2 {
  font-size: 1.60em;
}
p {
  margin-bottom: 1.8em;
}
img {
  max-width: 100%;
}

/* Link Styles */

a {
  text-decoration: none;
  color: #ff9904;
  font-weight: bold;
}
a:hover {
  color: #b3b3b3;
}

/* Section Styles */

.main-nav {
  background: #333;
  width: 100%;
  min-height: 30px;
  padding: 10px;
  position: fixed;
  text-align: center;
}
.nav {
  display: flex;
  justify-content: space-around;
  font-weight: 700;
  list-style-type: none;
  margin: 0 auto;
  padding: 0;
}
.nav .name {
    display: block;
    margin-right: auto;
    color: white;
}
.nav li {
  padding: 5px 10px 10px 10px;
}
.nav a {
  color: #b3b3b3;
  transition: all .5s;
}
.nav a:hover {
  color: white
}

header {
  text-align: center;
  background: linear-gradient(#fff, transparent 12%),
              linear-gradient(0deg, #f7f5f0, transparent),
              url('images/background.jpg') no-repeat;
  background-size: cover;
  background-position: center 27%;
  overflow: hidden;
  padding-top: 60px;
}
header {
  line-height: 1.5;
}
header .profile-image {
  margin-top: 50px;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  border: 3px solid white;
  transition: all .5s;
}
header .profile-image:hover {
  filter: grayscale(100%);
  -webkit-filter: grayscale(100%);
  transform: scale(1.08);
  border-radius: 5px;
}
.tag {
  background-color: #efefef;
  color: black;
  padding: 10px;
  border-radius: 5px;
  display: table;
  margin: 10px auto;
}
.location {
  background-color: #444;
  font-size: 1.05em;
  color: #f4df42;
}
.card {
  margin: 30px 0;
  padding: 20px 20px 40px;
  text-align: left;
  background: #fff;
  border-bottom: 4px solid #ccc;
  border-radius: 6px;
  transition: all .5s;
}
.card:hover {
  border-color: #f79250;
}

ul.hobbies,
ul.skills,
ul.contact,
footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

ul.skills {
  margin-bottom: 1.8em;
}

.hobbies li {
  margin-bottom: 10px;
}

.hobbies li::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #ff9904;
  margin-right: 10px;
}

.skills li {
  border-radius: 6px;
  display: inline-block;
  background: #ff9904;
  font-weight: bold;
  color: white;
  padding: 5px 10px;
  margin-right: 2px;
}

.skills li:nth-child(odd) {
  background: #ffc063;
}

.contact li a {
  display: block;
  min-height: 20px;
  margin: 0 0 10px;
  padding-left: 30px;
  background-size: 20px 20px;
  background-repeat: no-repeat;
}

.contact li.mail-icon a {
  background-image: url(images/mail.png);
}

.contact li.twitter-icon a {
  background-image: url(images/twitter.png);
}

footer {
  width: 100%;
  min-height: 30px;
  padding: 20px 0 40px 20px;
}

footer .copyright {
  top: -8px;
  font-size: .75em;
}

footer ul li {
  display: inline-block;
}

a.social {
  display: inline-block;
  text-indent: -9999px;
  margin-left: 5px;
  width: 30px;
  height: 30px;
  background-size: 30px 30px;
  opacity: .4;
  transition: all .5s;
}
a.twitter {
  background-image: url(images/twitter.svg);
}
a.linkedin {
  background-image: url(images/linkedin.svg);
}
a.github {
  background-image: url(images/github.svg);
}
a.social:hover {
  opacity: 1;
}
.clearfix {
  clear: both;
}

/* Styles for larger screens */
@media screen and (min-width: 635px) {

  .card {
    margin-left: 20px;
    margin-right: 20px;
  }

}

@media screen and (min-width: 720px) {

  header {
    min-height: 470px;
  }

  .nav {
    max-width: 1200px;
    padding: 0 30px;
  }


  main {
    padding-top: 20px;
  }

  main p {
    line-height: 1.6em;
  }

  .card {
    margin-left: 30px;
    margin-right: 30px;
    padding-left: 40px;
    padding-right: 40px;
  }

  .about-photo {
    border: 1px solid #3a3a3a;
    padding: 10px;
    width: 215px;
    float: left;
    margin: 6px 20px 20px 0;
  }

  footer {
    font-size: 1.3em;
    max-width: 1200px;
    margin: 40px auto;
  }

}

@media screen and (min-width: 932px) {

  .flex {
      display: -ms-flexbox;      /* TWEENER - IE 10 */
      display: flex;
      max-width: 1200px;
      -ms-flex-pack: distribute;
      justify-content: space-around;
      margin: 0 auto;
  }

  .card,
  section {
    flex: 1;
  }

  section + section {
    margin-left: 1.5em;
  }

  section:first-child {
    flex: 2;
  }

}

@media screen and (min-width: 1920px) {

  header {
    min-height: 600px;
  }

  header .profile-image {
    margin-top: 100px;
  }

}