* {
  box-sizing: border-box;
  -moz-box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  background: #ccc;
}
.group {
  &:after {
    display: block;
    clear: both;
  }
}
.page-wrap {
  width: 80%;
  background: white;
  margin: 1rem auto;
  padding: 2rem;
  @include transition(0.4s);
}
.main-header {
  position: relative;
}
.logo {
  width: 25%;
  background: #F06D06;
  padding: 0.5rem 1rem;
  color: white;
  font-size: 3rem;
  float: left;
  height: 80px;
  @include transition(0.4s);
}
.search {
  width: 25%;
  position: absolute;
  left: 25%;
  top: 0;
  background: lightblue;
  height: 80px;
  padding: 1rem;
  @include transition(0.8s);
  label {
    display: block;
  }
}
.nav {
  width: 50%;
  float: right;
  background: lightgreen;
  height: 80px;
  padding: 1rem;
  @include transition(0.4s);
}
.main-content {
  overflow: hidden;
  clear: both;
  @include transition(0.4s);
}
.main-content--articles {
  width: 75%;
  float: left;
  background: #eee;
  padding: 1rem;
  @include transition(0.4s);
  article {
    background: white;
    padding: 1rem;
    margin: 0 0 1rem 0;
    &:last-child {
      margin: 0;
    }
  }
}
.main-content--sidebar {
  width: 25%;
  float: right;
  background: #ddd;
  padding: 1rem;
}
.module {
  background: white;
  padding: 1rem;
  @include transition(0.4s);
}

@media (max-width: 850px) {
  .page-wrap {
    width: 98%;
  }
}
@media (max-width: 700px) {
  .search {
    left: 66.66%;
    top: 80px;
    width: 33.33%;
  }
  .logo {
    width: 33.33%;
  }
  .nav {
    width: 66.66%;
  }
  .main-content--articles {
    width: 66.66%;
  } 
  .main-content--sidebar {
    width: 33.33%;
    padding-top: 80px
  }
  .module {
    margin-top: 1rem;
  }
}
@media (max-width: 550px) {
  .page-wrap {
    padding: 1rem;
  }
  .logo {
    width: 100%;
  }
  .nav {
    width: 100%;
    height: 50px;
  }
  .search {
    left: 0;
    width: 100%;
    top: 130px;
    height: 70px;
  }
  .main-content {
    padding-top: 70px;
  }
  .main-content--articles {
    width: 100%;
  }
  .main-content--sidebar {
    padding-top: 0;
    width: 100%;
  }
}

.note {
  text-align: center;
  padding: 0.5rem;
  font: bold 1.2rem sans-serif;
}