body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  display: flex;
  color: #333333;
  flex-direction: column;
  min-height: 100vh;
}
header {
  background-color: #0088aa;
  color: #fff;
  text-align: center;
  padding: 20px 0;
}
nav {
  /*background-color: #f2f2f2;*/
  text-align: center;
  padding: 10px 0;
}
nav a {
  text-decoration: none;
  color: #666666;
  margin: 0 10px;
}
nav a:hover {
  color: #ffcc00;
}
.container {
  flex: 1;
  background-blend-mode: lighten;
  background: rgba(255, 255, 255, 0.8) url('../img/back.JPG') no-repeat;
  background-size: cover;
  padding: 20px;
}
.main-content {
  text-align: center;
  margin-bottom: 50px;
}
.services {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
}
.service {
  flex: 0 0 calc(33.33% - 20px);
  background-color: #f2f2f2;
  padding: 20px;
  margin: 10px;
  text-align: center;
  border-radius: 10px;
}
@media screen and (max-width: 600px) {
  .service {
    flex: 0 0 80%;
  }
}

footer {
  background-color: #0088aa;
  color: #fff;
  text-align: center;
  padding: 20px 0;
}