body {
  background-color: #00153e;
  background-image: url("images/background.jpg");
  background-attachment: fixed;
  color: white;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  background-image: linear-gradient(to left, #00153e, #003d88);
}

a {
  text-decoration: none;
  color: white;
  font-weight: bold;
}

header h1 {
  display: inline-block;
  font-size: 4em;
  margin: 0;
  padding: 0;
}
.nav ul {
  display: flex;
  list-style-type: none;
  margin: 0;
}

.nav ul li a {
  display: inline-block;
  padding: 20px;
  margin: 0;
  height: 100%;
}

.nav ul li a:hover {
  background-color: #003d88;
  color: white;
}

footer {
  clear: both;
  background-color: black;
  padding: 50px;
}

.active {
  background-color: #003d88;
  color: white;
}

.card {
  z-index: -1;
  float: left;
  margin: 20px;
  box-shadow: black 5px 5px 5px;
  border: 1px solid black;
  background-color: rgb(21, 21, 53);
  text-align: center;
  background-image: linear-gradient(#00153e, #003d88);
}

.card-img-top {
  box-sizing: border-box;
  padding: 50px;
}

#intro {
  text-align: center;
  margin-top: 20px;
}

#my-photo {
  padding: 20px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
}

#description {
  width: 70%;
  margin: auto;
  font-size: large;
}

#skills {
  margin: auto;
  padding: 20px;
}

#skills > h2 {
  color: white;
  margin-left: 15%;
}

#reviews {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 20px;
}

#reviews img {
  width: 70%;
}

.cards {
  display: flex;
  justify-content: center;
  align-items: center;
}

.display-6 {
  font-size: 1.5rem;
}

#title {
  margin-left: 50px;
  margin-top: 20px;
}
#form {
  margin: 50px;
  width: 70%;
}

.bar1,
.bar2,
.bar3 {
  width: 35px;
  height: 5px;
  background-color: white;
  margin: 6px 0;
  transition: 0.4s;
}

.change .bar1 {
  transform: rotate(-45deg) translate(-9px, 6px);
  transform: rotate(-45deg) translate(-9px, 6px);
}

.change .bar2 {
  opacity: 0;
}

.change .bar3 {
  transform: rotate(45deg) translate(-8px, -8px);
  transform: rotate(45deg) translate(-8px, -8px);
}

.menu {
  position: fixed;
  height: 100%;
  width: 70%;
  top: 0;
  right: -70%;
  opacity: 0.9;
  background-color: #00153e;
  transition: all 0.5s;
}

.backdrop {
  position: fixed;
  display: none;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: black;
  opacity: 0.9;
  z-index: 1;
}

.menu ul {
  list-style-type: none;
  margin: 70px 0 0 0;
  padding: 0;
}

.menu ul li a {
  display: inline-block;
  padding: 20px;
  margin: 0;
  height: 100%;
  width: 100%;
}

.menu ul li a:hover {
  background-color: #003d88;
  color: white;
}

.humberger {
  display: none;
  cursor: pointer;
}

@media (max-width: 900px) {
  .cards {
    flex-wrap: wrap;
  }
}

@media (max-width: 600px) {
  header {
    padding-left: 0;
  }
  .nav ul {
    display: none;
  }

  .humberger {
    display: block;
  }
}

@media (min-width: 601px) {
  .menu {
    right: -70% !important;
  }

  body {
    overflow: scroll !important;
  }
}