body{
           font-family: Verdana, Geneva, Tahoma, sans-serif
       }
   
       a {
           color: steelblue;
           font-weight: 600;
           text-decoration: none;
       }
   
       a:hover{
           text-decoration: underline;
       }
   
       #ahref{
           display: block;
           height: 20px;
           padding: 8px;
           background-color: #9faf09;
           color: white;
           font-weight: 500;
           text-decoration: none;
           border-radius: 3px;
       }
   
       #ahref:hover{
   background-color: #8c9738;
       }

       #ahref2{
        display: block;
        height: 20px;
        width: 350px;
        padding: 8px;
        text-align: center;
        background-color: #9faf09;
        color: white;
        font-weight: 500;
        text-decoration: none;
        border-radius: 3px;
    }

    #ahref2:hover{
background-color: #8c9738;
    }

    form{
        margin-left: 50px;
    }

    #btsub{
        display: block;
        border: solid 0px;
        cursor:pointer;
        width: 160 px;
        height: 35px;
        padding: 8px;
        background-color: #9faf09;
        color: white;
        font-weight: 500;
        text-decoration: none;
        border-radius: 3px;
    }

    #btsub:hover{
background-color: #8c9738;
    }
   
       #ftlink{
           display: flex;
           margin: auto;
           height: 20px;
           padding: 8px;
           color: white;
           font-weight: 500;
           /*text-decoration: none;*/
           border-radius: 3px;
       }
   
       #main_wrapper{
           /*width: 1280px;*/
           width: 80%;
           margin: auto;
           
       }
       
       header{
           
           /*height: 230px; */
           height: 270px;

           
          /* color:white;*/
          
       }
   
       
   
       #logo{   
          /* width: 624px;
           height: 127px;; */
           width: 365px;
           height: 266px;;
           padding: 4px;
           position: relative;
           margin: auto;
           background-image: url("https://www.lindo.com/images/lindo/INFORMS2021Conf.jpg");
           background-repeat: no-repeat;
            background-size: 365px 266px;
           /*background-size: 260px 130px;*/
           /* background-size: contain; */
           background-position: left;
           /*background-color: rgba(34, 33, 33, 0.082);     */
           /*border: 1px solid black;*/
           /*border-radius: 5px;  */
              
           
       }
   
       nav{
           /*width: 700px;    */
           width: 900px;
           text-align: center;
           margin: auto;
           padding-top: 10px;
           padding-bottom: 50px;
               
            
         
       }
       nav ul{
           display: flex;
           justify-content: space-between; /* spacing of flex elts */
           list-style-type: none; /* remove bullets! */
           font-size: 14px;
           font-weight: 400;
           margin: 0px;
           padding: 0px;
       }
   
       #maintitle{
          text-align: center;       
      }
      #maintitle h1{
          margin: 0px;
          padding: 0px;
          font-size: 30px;
          font-weight: 400;
          color: steelblue;
      }
      h2{
         
       margin: auto;
       text-align: center; 
          padding: 0px;
          font-size: 20px;
          font-weight: 300;
          color: steelblue;
      }
   
      #maintitle h2{
          margin: 0px;
          margin-bottom: 20px;
          padding: 0px;
          font-size: 22px;
          font-weight: 400;
      }
   
      content{
   display: block;
   margin-left: 10px;
   margin-right: 10px;
   text-align: justify;
   font-size: 14px;
}
   
      #col{
       display: flex;
       justify-content: space-between; /* spacing of flex elts */
       /* border: maroon 1px solid; */
       margin: auto;
       margin-top: 50px;
     
       /*height: 500px;*/
      }
   
      #colp{
       border: #9faf09 3px solid;
       margin: 4px;
       padding: 12px;
       border-radius: 8px;
      }
   
      footer{
          display: flex;
          justify-content: space-between;
          position: relative;
          bottom: -5px;
           height: 100px;
           width: 100%;
           /*background-size: cover;*/
           background-color:rgb(39, 36, 36);
           background-repeat: no-repeat;
          /* color:white;*/
          
       }