#project_content { 
    line-height: 0;
  
    -webkit-column-count: 2;
    -webkit-column-gap:   0px;
    -moz-column-count:    2;
    -moz-column-gap:      0px;
    column-count:         2;
    column-gap:           0px;
 }
 
 @media (max-width: 1800px) {
  #project_content {
   -moz-column-count:    1;
   -webkit-column-count: 1;
   column-count:         1;
   }
 } 
  
 
 .card-style{ 
   width: 100% !important;
   height: 600px !important;
   background-color: black; 
   padding:20px;
   border: 2px;
   border-style: solid;
   border-color: white; 
 }
 
 .card-text-style{  
    text-align: center!important; 
    margin-top:250px;
    margin-left: auto;
    margin-right: auto;
     color:white!important; 
 }