header {
  position: relative;
  width: 100%;
}

body, html {
  height: 100%;
  margin: 0;
  font-family: Helvetica;
}

body {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

main {
  flex: 1;
  padding: 0 400px;
  font-size: 20px;
}

.header_wrapper {
  position: relative;
  font-size: 26px;
  margin: 0;
  padding: 10px 400px;
  background-color: black;
  border-bottom: 10px solid #4c2c92;
  border-bottom: 10px solid #1d70b8;
}

.navbar_logo{
  color: white;
  display: flex;
  text-align: left;
  margin: 0;
}

.navbar_logo:hover{
  font-weight:bold;
}
.navbar{
  display: flex;
  text-align: left;
  align-items: center;
  background-color: white;
  padding: 10px 385px;
  border-bottom: 1px solid #b1b4b6;
}

.navbar a {
  color: blue;
  text-decoration: none;
  margin: 0 15px;
  font-size: 16px;
}

.navbar a:hover {
  text-decoration: underline;
  font-weight: bold;
}

.navbar a:active{
  background-color: yellow;
  color: black;
}

.banner{
  margin-top:25px;
  border: 2px solid #b1b4b6;
  background-color: #f3f2f1;
}

.introText{
  font-size: 20px;
}

.note_box{
  -moz-border-radius: 6px;
  -webkit-border-radius: 6px;
  background-color: #f0f7fb;
  background-position: 9px 0px;
  background-repeat: no-repeat;
  border: solid 1px #3498db;
  border-radius: 6px;
  line-height: 18px;
  overflow: hidden;
  padding: 15px 6px;
}

.mediabox{
  align-items: center;
  text-align: center;
}

.media_separator{
  position: relative;
}

.mediaItem{
  margin: 0 10px;
  position: relative;
}

.post-item{
  padding: 0px 10px;
}

.blogs {
  padding: 20px;
  border: 2px solid #b1b4b6;
  background-color: #f4f4f4;
  margin: 10px;
  tranistion: box-shadow 1s ease;
}

.blogs:hover{
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  tranform: translateY(-2px);
  border-color: #0b0c0c;
  font-weight: bold;
}

.projects:hover{
  font-weight: bold;
  background-color: #f4f4f4;
  border-color: black;
}

.topic {
    position:relative;
    width: 100px;
    height: 50px;
    border: 2px solid #ccc;
    background-color: #f4f4f4;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

.filter_btn{
  cursor: pointer;
  text-decoration: none;
  tranistion: background-color 0.5s ease;
}

.filter_btn:hover{
  background-color: #d0d0d0;
  border-color: #0b0c0c;
  font-weight: bold;
  text-decoration: underline;
}

.filter_btn:active{
  background-color: yellow;
}

footer {
  position: relative;
  width: 100%;
  background-color:#f3f2f1;
  color: #0b0c0c;
  border-top: 1px solid #b1b4b6;
  text-align: center;
  margin-top: auto;
}

 

@media screen and (max-width: 1280px){
  main{
    padding: 0 10px;
  }

  .header_wrapper {
    padding: 10px 10px;
  }

  .navbar_logo{
    color: white;
    display: flex;
    text-align: left;
    margin: 0;
  }

  .navbar{
    padding: 10px 10px;
  }

  .banner{
    margin-top: 10px;
    border: 2px solid #b1b4b6;
    background-color: #f3f2f1;
    padding: 0px;
  }

  .introText{
    font-size: 16px;
  }
  .blogs {
    padding: 0px 10px;
  }

  .topic {
    width: 100%;  
    padding: 0px 10px;
  }

  .projects{
    padding: 0px 10px;
  }

  .note_box{
    -moz-border-radius: 2px;
    -webkit-border-radius: 6px;
    background-color: #f0f7fb;
    background-position: 9px 0px;
    background-repeat: no-repeat;
    border: solid 1px #3498db;
    border-radius: 6px;
    line-height: 18px;
    overflow: hidden;
    padding: 5px 1px;
  }

  .filter_btn:hover{
    background-color: #yellow;
  }
}