table {
width: 90%;
margin-left: auto;
  margin-right: auto;
}
#row1, #row2, #row3 {
width: 30%;
}
.post_zag, .card-text, .card-body, .post_zag, .author {
width: 90%;
margin-left: auto;
  margin-right: auto;
text-align: center;
}
.post {
background-color: #7fc3ff;
border-radius: 22px;
width: 90%;
height: 95%;
margin-bottom: 20px;
}
details {
color: #ffffff;
}