#header {
    width: 200%;
    background-color: yellow;
    color: white;
    text-align: center;
    font-size: 900px;
   float: right;
    width: 90%;
    margin-right: 5%;
  .post-title {
    padding-top: 25px;
    padding-right: 25px;
    padding-bottom: 50px;
    font-size: 24px;
    font-family: tahoma;
    font-weight: bold;
}
.post-date {
    padding-top: 30px;
    padding-right: 25px;
    padding-bottom: 5px;
    font-size: 15px;
    font-family: tahoma;
}
.post-content {
    padding-right: 25px;
    padding-left: 25px;
    padding-bottom: 5px;
    text-align: justify;
    font-size: 18px;
    font-family: tahoma;
}